The Introduction of a Supermarket via Tax-Credits in a Low-Income Area

Purpose.

Interest and funding continue to grow for bringing supermarkets to underserved areas, yet little is known about their impact.

Design.

A quasi-experimental study was used to determine the impact of a new supermarket opening as a result of tax and zoning incentives.

Setting.

The study took place in the South Bronx, New York City, New York.

Subjects:

Studied were residents of two South Bronx neighborhoods deemed high need.

Measures.

Food purchasing and consumption were examined via surveys and 24-hour dietary recalls before and at two points after the supermarket opened (1–5, 13–17 months).

Analysis.

Data were analyzed using difference-in-difference models controlling for gender, race and ethnicity, age, education, marital status, and self-reported income. Ordinary least squares and logistic regression models were estimated for continuous and binary outcomes, respectively.

Results.

At baseline, 94% to 97% of consumers shopped at a supermarket. There was a 2% increase in this behavior in the intervention community ( p < .05) not seen in the comparison community. One year later there was a 7% net increase in eating at home ( p < .1) and a 20% decrease in drinking sugary beverages ( p < .05), but no appreciable change in fruit/vegetable consumption or overall dietary quality.

Conclusion.

The new supermarket did not result in substantial or broad changes in purchasing patterns or nutritional quality of food consumed, though smaller, positive changes were observed over a 1-year period. Future work should examine different contexts and a broader set of outcomes, including economic development.

Dietary variety is inversely associated with body adiposity among US adults using a novel food diversity index

BACKGROUND

Consuming a variety (vs. monotony) of energy-poor, nutrient-dense foods may help individuals adhere to dietary patterns favorably associated with weight control.

OBJECTIVE

The objective of this study was to examine whether greater healthful food variety quantified using the US Healthy Food Diversity (HFD) index favorably influenced body adiposity.

METHODS

Men and nonpregnant, nonlactating women aged ≥20 y with two 24-h recalls from the cross-sectional NHANES 2003-2006 (n = 7470) were included in this study. Dietary recalls were merged with the MyPyramid Equivalent database to generate the US HFD index, which ranges from 0 to ∼1, with higher scores indicative of diets with a higher number and proportion of healthful foods. Multiple indicators of adiposity including BMI, waist-to-height ratio, android-to-gynoid fat ratio, fat mass index (FMI), and percentage body fat were assessed across US HFD index quintiles. ORs and 95% CIs were computed with use of multivariable logistic regression (SAS v. 9.3).

RESULTS

The US HFD index was inversely associated with most adiposity indicators in both sexes. After multivariable adjustment, the odds of obesity, android-to-gynoid ratio >1, and high FMI were 31-55% lower (P-trend < 0.01) among women in quintile 5 vs. quintile 1 of the US HFD index. Among men, the odds of obesity, waist-to-height ratio ≥0.5, and android-to-gynoid ratio >1 were 40-48% lower (P-trend ≤ 0.01) in quintile 5 vs. quintile 1 of the US HFD index.

CONCLUSIONS

Higher US HFD index values were inversely associated with indicators of body adiposity in both sexes, indicating that greater healthful food variety may protect against excess adiposity. This study explicitly recognizes the potential benefits of dietary variety in obesity management and provides the foundation to support its ongoing evaluation.

Promotion of healthy eating through public policy: a controlled experiment

BACKGROUND

To induce consumers to purchase healthier foods and beverages, some policymakers have suggested special taxes or labels on unhealthy products. The potential of such policies is unknown.

PURPOSE

In a controlled field experiment, researchers tested whether consumers were more likely to purchase healthy products under such policies.

METHODS

From October to December 2011, researchers opened a store at a large hospital that sold a variety of healthier and less-healthy foods and beverages. Purchases (N=3680) were analyzed under five conditions: a baseline with no special labeling or taxation, a 30% tax, highlighting the phrase "less healthy" on the price tag, and combinations of taxation and labeling. Purchases were analyzed in January-July 2012, at the single-item and transaction levels.

RESULTS

There was no significant difference between the various taxation conditions. Consumers were 11 percentage points more likely to purchase a healthier item under a 30% tax (95% CI=7%, 16%, p<0.001) and 6 percentage points more likely under labeling (95% CI=0%, 12%, p=0.04). By product type, consumers switched away from the purchase of less-healthy food under taxation (9 percentage point decrease, p<0.001) and into healthier beverages (6 percentage point increase, p=0.001); there were no effects for labeling. Conditions were associated with the purchase of 11-14 fewer calories (9%-11% in relative terms) and 2 fewer grams of sugar. Results remained significant controlling for all items purchased in a single transaction.

CONCLUSIONS

Taxation may induce consumers to purchase healthier foods and beverages. However, it is unclear whether the 15%-20% tax rates proposed in public policy discussions would be more effective than labeling products as less healthy.

Sustained outcomes of a peer-taught family education program on mental illness

OBJECTIVE

This study examines 6-month follow-up data from participants in a randomized trial of a peer-driven 12-session family support and education program, called family-to-family (FTF) and offered by the US National Alliance on Mental Illness, to determine whether improvements in distress, family functioning, coping and empowerment were sustained.

METHOD

Individuals randomized to the FTF condition were assessed after program completion and then 3 months later on measures of distress, family functioning, coping, and empowerment. We used a multilevel regression model (sas proc mixed) to test for significant changes over time (baseline, 3 and 9 months).

RESULTS

All significant benefits that FTF participants gained between baseline and immediately post-FTF were sustained at 9 months including reduced anxiety, improved family problem-solving, increased positive coping, and increased knowledge. Greater class attendance was associated with larger increases in empowerment and reductions in depression and displeasure with ill relative.

CONCLUSION

Evidence suggests that benefits of the FTF program were sustained for at least 6 months without any additional boosters or supports. Peer-based programs may produce sustained benefits for individuals seeking help in addressing challenges and stresses related to having a family member with a mental illness.

Calcium and Dairy Intake and Measures of Obesity in Hyper- and Normocholesterolemic Children

OBJECTIVE

Calcium intake has been inversely associated with body weight and body fatness in adults and, to a lesser extent, in children. Dairy intake has been inversely associated with metabolic syndrome in overweight but not normal-weight adults. We assessed whether intakes of calcium and dairy foods were associated with measures of obesity in hypercholesterolemic (HC) and normocholesterolemic (non-HC) children at baseline and over 1 year.

RESEARCH METHODS AND PROCEDURES

Non-obese 4- to 10-year-old HC and non-HC children (342) completed three 24-hour dietary recalls and provided measures of relative weight (BMI and BMI z scores) and adiposity (sum of skinfolds, trunk skinfolds) at baseline, 3, 6, and 12 months. Cross-sectional and longitudinal regression analyses, stratified by cholesterol risk status (HC vs. non-HC) and age (4 to 6 years and 7 to 10 years) and adjusted for potential confounders, were conducted.

RESULTS

After adjusting for age, sex, energy intake, and percentage energy from fat, calcium intake was inversely associated with BMI, sum of skinfolds, and trunk skinfolds at baseline and over 1 year in the 7- to 10-year-old non-HC children. Results from the regression models also indicated an inverse relation between intake of dairy foods and measures of obesity at baseline in these children. Calcium or dairy intake was not associated with measures of obesity in HC children or in the 4- to 6-year-old non-HC children.

DISCUSSION

These results suggest a complex relation among intake of calcium and dairy foods, measures of obesity, age, and serum cholesterol in children. Older children without risk of metabolic syndrome may benefit most from increased calcium intake.

Weight changes and their associations with demographic and clinical characteristics in risperidone maintenance treatment for schizophrenia

OBJECTIVE

This study aimed to characterize weight changes in schizophrenia patients taking risperidone as part of a randomized, controlled, open-label clinical trial.

METHODS

A total of 374 patients with schizophrenia who had been clinically stabilized following an acute episode were randomly assigned to a 'no-dose-reduction' group (initial optimal therapeutic doses continued throughout the study), a '4-week group' (initial optimal therapeutic doses continued for 4 weeks followed by a half dose reduction that was maintained until the end of the study) or a '26-week group' (initial optimal therapeutic doses continued for 26 weeks followed by a half dose reduction until the end of the study). Participants were assessed monthly using standardized assessment instruments during the first 6 months, and then every 2 months until the last recruited patient completed the 1-year follow-up. Weight gain was defined as gaining at least 7% of initial body weight, weight loss as losing at least 7% of initial body weight. A BMI <18.5 kg m⁻² was defined as underweight, 18.5-24.9 kg m⁻² as normal range, and ≥ 25 kg m⁻² as overweight or obese.

RESULTS

At the end of follow-up, of the patients who started within the underweight range (n=22), 77.3% gained weight, whereas 4.5% lost weight. The corresponding figures were 39.6% and 4.8% in patients who started at normal weight (n=273), respectively, and 17.7% and 17.7% in patients who started at overweight (n=79), respectively. At the same time, 59.1% of the patients who started at underweight range went into the normal weight and 13.6% into the overweight/obese range, respectively, while 24.5% of those who started at normal weight went into the overweight/obese range, and 1.1% into underweight range, respectively; 20.3% of those who started at overweight range went into normal weight at the end of the follow-up. Multiple logistic regression analyses revealed that being underweight or normal weight at study entry predicted weight gain compared to being overweight, whereas being overweight at entry was associated with a higher likelihood of weight loss compared to being normal weight. No correlation was found between weight change and dose reduction.

CONCLUSIONS

Weight change is a common, long-term, but heterogeneous side effect in risperidone maintenance treatment for stable schizophrenia patients. Special attention should be paid to fluctuations in weight that may occur throughout the course of treatment with risperidone.

Vitamin E intake and risk of esophageal and gastric cancers in the NIH-AARP Diet and Health Study

We investigated the association of dietary alpha-tocopherol, gamma-tocopherol and supplemental vitamin E intake with the risk of esophageal squamous cell carcinoma (n = 158), esophageal adenocarcinoma (n = 382), gastric cardia adenocarcinoma (n = 320) and gastric noncardia adenocarcinoma (GNCA; n = 327) in the NIH-AARP Diet and Health Study, a cohort of approximately 500,000 people. Data on dietary and supplemental vitamin E intake were collected using a validated questionnaire at baseline and were analyzed using Cox regression models. Intakes were analyzed as continuous variables and as quartiles. For dietary alpha-tocopherol, we found some evidence of association with decreased esophageal squamous cell carcinoma and increased esophageal adenocarcinoma risk in the continuous analyses, with adjusted hazard ratios and 95% confidence intervals of 0.90 (0.81-0.99) and 1.05 (1.00-1.11), respectively, per 1.17 mg (half the interquartile range) increased intake. However, in quartile analyses, the p value for trend was nonsignificant for both these cancers. There was no association between dietary alpha-tocopherol and gastric cardia adenocarcinoma or GNCA. We observed no statistically significant associations with gamma-tocopherol. For supplemental vitamin E, the results were mainly null, except for a significantly lower risk of GNCA with higher doses of supplemental vitamin E. An increase of 71 mg/day (half the interquartile range) in supplemental vitamin E had an hazard ratio (95% confidence interval) of 0.92 (0.85-1.00) and the p value for trend in the quartile analysis was 0.015.

Adherence to the USDA Food Guide, DASH Eating Plan, and Mediterranean dietary pattern reduces risk of colorectal adenoma

The 2005 Dietary Guidelines for Americans include quantitative recommendations for 2 eating patterns, the USDA Food Guide and the Dietary Approaches to Stop Hypertension (DASH) Eating Plan, to promote optimal health and reduce disease risk. A Mediterranean dietary pattern has also been promoted for health benefits. Our objective was to determine whether adherence to the USDA Food Guide recommendations, the DASH Eating Plan, or a Mediterranean dietary pattern is associated with reduced risk of distal colorectal adenoma. In the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, men and women aged 55-74 y were screened for colorectal cancer by sigmoidoscopy at 10 centers in the U.S. After adjusting for potential confounders, men who most complied with the USDA Food Guide recommendations had a 26% reduced risk of colorectal adenoma compared with men who least complied with the recommendations (OR USDA score >or= 5 vs. <or=2 = 0.74, 95% CI = 0.64-0.85; P-trend < 0.001). Comparable results were found for men who had intakes most similar to the DASH Eating Plan or a Mediterranean dietary pattern. Women who most complied with the USDA Food Guide recommendations had an 18% reduced risk for colorectal adenoma, but subgroup analyses revealed protective associations only for current smokers (OR USDA score >or= 5 vs. <or=2 = 0.52, 95% CI = 0.31-0.89; P-trend < 0.01) or normal-weight women (OR USDA score >or= 5 vs. <or=2 = 0.74, 95% CI = 0.55-0.99; P-trend = 0.08). Following the current U.S. dietary recommendations or a Mediterranean dietary pattern is associated with reduced risk of colorectal adenoma, especially in men.

Supplemental and Dietary Vitamin E Intakes and Risk of Prostate Cancer in a Large Prospective Study

Supplemental vitamin E (alpha-tocopherol) has been linked to lower prostate cancer incidence in one randomized trial and several, although not all, observational studies. The evidence regarding dietary intake of individual vitamin E isoforms and prostate cancer is limited and inconclusive, however. We prospectively examined the relations of supplemental vitamin E and dietary intakes of alpha-, beta-, gamma-, and delta- tocopherols to prostate cancer risk among 295,344 men, ages 50 to 71 years and cancer-free at enrollment in 1995 to 1996, in the NIH-AARP Diet and Health Study. At baseline, participants completed a questionnaire that captured information on diet, supplement use, and other factors. Proportional hazards models were used to estimate relative risks (RR) and 95% confidence intervals (95% CI) of prostate cancer. During 5 years of follow-up, 10,241 incident prostate cancers were identified. Supplemental vitamin E intake was not related to prostate cancer risk (for >0-99, 100-199, 200-399, 400-799, and > or = 800 IU/d versus never use: RR, 0.97, 0.89, 1.03, 0.99, and 0.97 (95% CI, 0.87-1.07) respectively; Ptrend = 0.90). However, dietary gamma-tocopherol, the most commonly consumed form of vitamin E in the United States, was significantly inversely related to the risk of advanced prostate cancer (for highest versus lowest quintile: RR, 0.68; 95% CI, 0.56-0.84; Ptrend = 0.001). These results suggest that supplemental vitamin E does not protect against prostate cancer, but that increased consumption of gamma-tocopherol from foods is associated with a reduced risk of clinically relevant disease. The potential benefit of gamma-tocopherol for prostate cancer prevention deserves further attention.

Carotenoid and tocopherol estimates from the NCI diet history questionnaire are valid compared with multiple recalls and serum biomarkers

To improve the measurement of usual dietary intake, the National Cancer Institute developed a cognitively based Diet History Questionnaire (DHQ), which has been validated against four 24-h dietary recalls (4 24-HR) for energy, macronutrients, and several vitamins and minerals. This analysis used data from The Eating at America's Table Study (EATS) to determine the validity of estimates for carotenoids and tocopherols from the DHQ. Over the course of a year, 163 participants provided 1 or 2 blood samples and completed the DHQ and 4 24-HR. For both the DHQ and the 4 24-HR, crude correlations between serum and diet were modest to strong for the provitamin A carotenoids (alpha-carotene, beta-carotene, beta-cryptoxanthin), low to modest for lycopene, and very low for lutein. The individual dietary tocopherols were weakly correlated with the serum tocopherols, but vitamin E from food and dietary supplements was strongly and positively correlated with serum alpha-tocopherol and strongly and inversely correlated with serum gamma-tocopherol for both instruments. Adjustment for energy, BMI, smoking status, serum total cholesterol, and serum triacylglycerol did not appreciably change the correlations. Using the method of triads, validity coefficients for the DHQ were comparable to the 4 24-HR and were especially strong for alpha-carotene, beta-cryptoxanthin, lutein + zeaxanthin, and total vitamin E in men and gamma-tocopherol and total vitamin E in women. In this study, there was no advantage of 2 blood samples over 1, suggesting reasonably stable ranking of individuals for these biomarkers, which is important for large epidemiologic studies that typically obtain only 1 blood sample for biomarker status.

Predictors for Research Involvement among Registered Dietitians

OBJECTIVE

The primary aim of this study was to measure registered dietitians' (RDs') research involvement (by creating a research score) and to determine whether their perceptions, attitudes, and knowledge of evidence-based practice and key antecedent factors (eg, sociodemographic characteristics, education and training, professional experiences, and employment setting) predicted their research involvement.

DESIGN

This cross-sectional, descriptive study used the Dietitian Research Involvement Survey and followed the Tailored Design Method.

SUBJECTS/SETTING

This study surveyed 258 randomly selected RDs from seven dietetic practice groups of the American Dietetic Association.

STATISTICAL ANALYSES PERFORMED

Descriptive statistics, bivariate relationships, and multiple linear regression analyses were conducted to test whether perceptions, attitudes, and knowledge of evidence-based practice score and antecedent factors predicted the research score of dietitians.

RESULTS

Perceptions, attitudes, and knowledge of evidence-based practice score (r = 0.59, P < 0.0005), level of education (r = 0.53, P < 0.0005), taking a research course (r = 0.40, P < 0.0005), last time read research (r = 0.35, P < 0.0005), frequency of professional reading (r = 0.32, P < 0.0005), primary area of practice (r = 0.14, P = 0.02), association memberships (r = 0.14, P = 0.02), and dietetic practice group affiliation (r = 0.14, P = 0.02) were significantly correlated with research score. Using multivariate linear regression, the perceptions, attitudes, and knowledge of evidence-based practice score (beta = 0.48, P < 0.0005) and level of education (beta = 0.39, P < 0.0005) were identified as the strongest predictors of research score.

CONCLUSIONS

Involvement in research by RDs is largely determined by their perceptions, attitudes, and knowledge of evidence-based practice and their level of education. Additional education and training related to research methodology and design, and evidence-based practice, is essential for greater participation in research activities by RDs.

Radiographic texture analysis of densitometer-generated calcaneus images differentiates postmenopausal women with and without fractures

INTRODUCTION

Bone fragility is determined by bone mass, measured as bone mineral density (BMD), and by trabecular structure, which cannot be easily measured using currently available noninvasive methods. In previous studies, radiographic texture analysis (RTA) performed on the radiographic images of the spine, proximal femur, and os calcis differentiated subjects with and without osteoporotic fractures. The present cross-sectional study was undertaken to determine whether such differentiation could also be made using high-resolution os calcis images obtained on a peripheral densitometer.

METHODS

In 170 postmenopausal women (42 with and 128 without prevalent vertebral fractures) who had no secondary causes of osteoporosis and were not receiving treatment for osteoporosis, BMD of the lumbar spine, proximal femur, and os calcis was measured using dual energy x-ray absorptiometry. Vertebral fractures were diagnosed on densitometric spine images. RTA, including Fourier-based and fractal analyses, was performed on densitometric images of os calcis.

RESULTS

BMD at all three sites and all texture features was significantly different in subjects with and without fractures, with the most significant differences observed for the femoral neck and total hip measurements and for the RTA feature Minkowski fractal (p<0.001). In univariate logistic regression analysis, Minkowski fractal predicted the presence of vertebral fractures as well as femoral neck BMD (p<0.001). In multivariate logistic regression analysis, both femoral neck BMD and Minkowski fractal yielded significant predictive effects (p=0.001), and when age was added to the model, the effect of RTA remained significant (p=0.002), suggesting that RTA reflects an aspect of bone fragility that is not captured by age or BMD. Finally, when RTA was compared in 42 fracture patients and 42 nonfracture patients matched for age and BMD, the RTA features were significantly different between the groups (p=0.003 to p=0.04), although BMD and age were not.

CONCLUSION

This study suggests that RTA of densitometer-generated calcaneus images provides an estimate of bone fragility independent of and complementary to BMD measurement and age.

Bone health of immigrant Chinese women living in New York City

Osteoporosis is a serious national and global public health problem, but data on bone health are limited for Asian women living in the U.S., the majority of whom are Chinese. For this study, we measured bone mineral density (BMD) by dual energy X-ray densitometry (DXA) at the lumbar spine and hip region in 300 immigrant Chinese women, ages 40-90 y, living in New York City. We also collected demographic and health data, information about knowledge and care for osteoporosis, and anthropometric measures, and estimated calcium intake from the women. In our sample, 55% had osteoporosis and 38% had low bone mass (osteopenia). Older age, lower body mass index (BMI), and shorter height were associated with lower BMD at all sites. Years lived in the U.S. and number of children were also associated with lower BMD of the lumbar spine. Chinese women who emigrated from Mainland China had lower BMD at the lumbar spine and femoral neck than Chinese women who emigrated from Hong Kong, after adjusting for potential confounders. Both groups of immigrant women had lower BMD at all sites than a national sample of U.S. Caucasian women. Although the women in our study had generally poor knowledge about osteoporosis, most could identify at least one food rich in calcium. The large number of immigrant Chinese women in New York City with osteoporosis calls for major efforts to increase awareness, prevention, diagnosis, and treatment of this condition in this susceptible population.

A prospective study of lycopene and tomato product intake and risk of prostate cancer

BACKGROUND

Dietary lycopene and tomato products may reduce risk of prostate cancer; however, uncertainty remains about this possible association.

METHODS

We evaluated the association between intake of lycopene and specific tomato products and prostate cancer risk in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, a multicenter study designed to investigate cancer early detection methods and etiologic determinants. Participants completed both a general risk factor and a 137-item food frequency questionnaire at baseline. A total of 1,338 cases of prostate cancer were identified among 29,361 men during an average of 4.2 years of follow-up.

RESULTS

Lycopene intake was not associated with prostate cancer risk. Reduced risks were also not found for total tomato servings or for most tomato-based foods. Statistically nonsignificant inverse associations were noted for pizza [all prostate cancer: relative risk (RR), 0.83; 95% confidence interval (95% CI), 0.67-1.03 for >or=1 serving/wk versus < 0.5 serving/mo; P(trend)=0.06 and advanced prostate cancer: RR, 0.79; 95% CI, 0.56-1.10; P(trend)=0.12] and spaghetti/tomato sauce consumption (advanced prostate cancer: RR=0.81, 95% CI, 0.57-1.16 for >or=2 servings/wk versus<1 serving/mo; P(trend)=0.31). Among men with a family history of prostate cancer, risks were decreased in relation to increased consumption of lycopene (P(trend)=0.04) and specific tomato-based foods commonly eaten with fat (spaghetti, P(trend)=0.12; pizza, P(trend)=0.15; lasagna, P(trend)=0.02).

CONCLUSIONS

This large study does not support the hypothesis that greater lycopene/tomato product consumption protects from prostate cancer. Evidence for protective associations in subjects with a family history of prostate cancer requires further corroboration.

Obesity among individuals with serious mental illness

OBJECTIVE

To study the distribution and correlates of body mass index (BMI) among individuals with serious mental illness.

METHOD

A total of 169 participants were recruited from randomly selected out-patients receiving community-based psychiatric care and were interviewed with items from the National Health and Nutrition Examination Survey (NHANES) III. Their BMI was compared with that of 2404 matched individuals from the NHANES data set.

RESULTS

The distribution of BMI in the psychiatric sample significantly differed from that of the comparison group; 50% of women and 41% of men were obese compared with 27% and 20% in the comparison group. Within the psychiatric sample, higher BMI was associated with current hypertension and diabetes, a wish to weigh less, and reduced health-related functioning.

CONCLUSION

Obesity is more prevalent among individuals with serious mental illness than in demographically matched individuals from the US general population. Among persons with mental illness, obesity is associated with co-occurring health problems.

Supplemental and dietary vitamin E, beta-carotene, and vitamin C intakes and prostate cancer risk

BACKGROUND

Vitamin E, beta-carotene, and vitamin C are micronutrient antioxidants that protect cells from oxidative damage involved in prostate carcinogenesis. In separate trials, supplemental vitamin E was associated with a decreased risk of prostate cancer among smokers and supplemental beta-carotene was associated with a decreased risk of prostate cancer among men with low baseline plasma beta-carotene levels.

METHODS

We evaluated the association between intake of these micronutrient antioxidants from foods and supplements and the risk of prostate cancer among men in the screening arm of the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial. At baseline, trial participants completed a 137-item food frequency questionnaire that included detailed questions on 12 individual supplements. Cox proportional hazards models were used to estimate relative risks (RRs) and 95% confidence intervals (CIs). All statistical tests were two-sided.

RESULTS

We identified 1338 cases of prostate cancer among 29 361 men during up to 8 years of follow-up. Overall, there was no association between prostate cancer risk and dietary or supplemental intake of vitamin E, beta-carotene, or vitamin C. However, among current and recent (i.e., within the previous 10 years) smokers, decreasing risks of advanced prostate cancer (i.e., Gleason score > or = 7 or stage III or IV) were associated with increasing dose (RR for > 400 IU/day versus none = 0.29, 95% CI = 0.12 to 0.68; Ptrend = .01) and duration (RR for > or = 10 years of use versus none = 0.30, 95% CI = 0.09 to 0.96; Ptrend = .01) of supplemental vitamin E use. Supplemental beta-carotene intake at a dose level of at least 2000 microg/day was associated with decreased prostate cancer risk in men with low (below the median of 4129 microg/day) dietary beta-carotene intake (RR = 0.52, 95% CI = 0.33 to 0.81). Among smokers, the age-adjusted rate of advanced prostate cancer was 492 per 100,000 person-years in those who did not take supplemental vitamin E, 153 per 100,000 person-years in those who took more than 400 IU/day of supplemental vitamin E, and 157 per 100,000 person-years in those who took supplemental vitamin E for 10 or more years. Among men with low dietary beta-carotene intake, the age-adjusted rate of prostate cancer was 1122 per 100,000 person-years in those who did not take supplemental beta-carotene, and 623 per 100,000 person-years in those who took at least 2000 microg/day of supplemental beta-carotene.

CONCLUSIONS

Our results do not provide strong support for population-wide implementation of high-dose antioxidant supplementation for the prevention of prostate cancer. However, vitamin E supplementation in male smokers and beta-carotene supplementation in men with low dietary beta-carotene intakes were associated with reduced risk of this disease.

Dietary intake and risk of coronary heart disease differ among ethnic subgroups of black Americans

Coronary heart disease (CHD) morbidity and mortality are more prevalent in Blacks than Whites in the United States. Most studies evaluate the dietary intake and health of Black Americans as one group and do not consider possible differences among ethnic subgroups within the U.S. Black population. We used data from NHANES III to assess whether dietary intake, CHD risk factors, and predicted 10-y risk of CHD differed between non-Hispanic Black adults born in the United States (NHB-US), and non-Hispanic and Hispanic Black adults born outside of the United States (NHB-non US, HB-non US). Data were provided from single 24-h dietary recalls, biochemical measures, the medical examination, and self-reported responses to survey questions. NHB-US had higher intakes of energy, fat, protein, meat, added sugars, and sodium, and lower intakes of fruits, fiber, and most micronutrients. NHB-US also had higher predicted 10-y risk of developing CHD (5.8%) than NHB-non US (3.7%, P<0.001) or HB-non US (4.7%, P=0.017). Both immigrant groups had better CHD risk profiles and lower proportions of persons with metabolic syndrome and other CHD-related conditions. Our findings show differences in dietary intake and risk of CHD and related health conditions among ethnic subgroups of Blacks living in the United States. Future studies of diet and health should consider cultural differences within the Black population to better understand and reduce overall health disparities in the United States.

Socioeconomic influences on bone health in postmenopausal women: findings from NHANES III, 1988-1994

Our objectives were (1) to examine the associations of education and income with bone health in non-Hispanic White, non-Hispanic Black and Mexican-American postmenopausal women, (2) to determine if any observed associations can be explained by behavioral factors such as calcium intake and physical activity and (3) to determine if government food assistance and education are associated with increased calcium intake among low-income women. Cross-sectional data were gathered by the Third National Health and Nutrition Examination Survey, 1988-1994 (NHANES III) using a stratified multistage probability design. Bone health was indicated by total hip bone mineral density (BMD, g/cm2). Multiple linear regression was used to evaluate the associations of education, income and behavioral factors with BMD. There were 2,905 postmenopausal women with acceptable DXA scans and complete relevant data selected from a nationally representative sample of the civilian non-institutionalized population aged 2 months and older. Education and income were positively associated with BMD in Black and White women, respectively, but not in Mexican-American women. When behavioral factors were included in the analyses, associations with education and income were eliminated. Instead, positive associations with estrogen use, calcium intake and physical activity, and a negative association with smoking, were noted in White women. Among low-income women, education was associated with increased calcium intake, while participation in the Food Stamp Program was associated with increased calcium intake in Black women. We conclude that education and/or income are positively associated with BMD among Black and White postmenopausal women, and that efforts to promote bone health among low-income women are warranted.

Evidence-based practice: what are dietitians' perceptions, attitudes, and knowledge?

OBJECTIVE

The objective of this study was to measure dietitians' perceptions, attitudes, and knowledge of evidence-based practice (PAK score), and to determine whether antecedent factors (eg, sociodemographic characteristics, education and training, professional experiences, and employment setting) predicted PAK score.

DESIGN

This cross-sectional, descriptive study used the Dietitian Research Involvement Survey following the Tailored Design Method.

SUBJECTS/SETTING

This study surveyed 500 randomly selected registered dietitians from seven dietetic practice groups of the American Dietetic Association.

STATISTICAL ANALYSES PERFORMED

Bivariate relationships were examined between antecedent factors and PAK score. Multiple linear regression analyses were conducted to test whether these factors predicted PAK score.

RESULTS

Higher PAK scores were associated with registered dietitians who completed more years of education (r=0.28, P<.0005), had taken a research course (r=0.28, P<.0005), frequently read research articles (r=0.41, P<.0005), earned an advanced-level board certification (r=0.18, P=.004), worked full-time (r=0.26, P<.0005), or belonged to professional organizations (r=0.18, P=.003). The strongest predictors for PAK score were "last time read research" (beta=.33, P<.0005), work status (beta=.20, P<.0005), level of education (beta=.19, P=.001), and association memberships (beta=.14, P=.01).

CONCLUSIONS

Results indicated that dietitians' ability to incorporate an evidence-based approach is largely determined by their education and training, work experience, and professional association involvement. This study identified a need to integrate concepts and principles of evidence-based practice into dietetics curriculums so that practitioners are able to routinely apply research findings to clinical practice.

Dietary patterns and breast cancer risk: results from three cohort studies in the DIETSCAN project

OBJECTIVE

Only a few consistent findings on individual foods or nutrients that influence breast cancer risk have emerged thus far. Since people do not consume individual foods but certain combinations of them, the analysis of dietary patterns may offer an additional aspect for assessing associations between diet and diseases such as breast cancer. It is also important to examine whether the relationships between dietary patterns and breast cancer risk are consistent across populations.

METHODS

We examined the risk of breast cancer with two dietary patterns, identified as "Vegetables" (VEG) and "Pork, Processed Meat, Potatoes" (PPP), common to all cohorts of the DIETSCAN project. During 7 to 13 years of follow-up, three of the cohorts--the Netherlands Cohort Study on diet and cancer (NLCS), the Swedish Mammography Cohort (SMC), and the Ormoni e Dieta nella Eziologia dei Tumori (Italy-ORDET)--provided data on 3271 breast cancer cases with complete information on their baseline diet measured by a validated food frequency questionnaire.

RESULTS

After adjustment for potential confounders, VEG was not associated with the risk of breast cancer across all cohorts. PPP was also not associated with the risk of breast cancer in SMC and ORDET, but a high PPP score tended to be inversely associated with breast cancer in the NLCS study (RR = 0.69; 95% CI, 0.52-0.92, highest versus lowest quartile). PPP differed in one aspect between the cohorts: butter loaded positively on the pattern in all cohorts except NLCS, in which butter loaded negatively and appeared to be substituted by low-fat margarine loading positively.

CONCLUSION

In general, the dietary patterns showed consistent results across the three cohorts except for the possible protective effect of PPP in the NLCS cohort, which could be explained by a difference in that pattern for NLCS. The results supported the suggestion derived from traditional epidemiology that relatively recent diet may not have an important role in the etiology of breast cancer.

Importance of generational status in examining access to and utilization of health care services by Mexican American children

OBJECTIVES

To describe the sociodemographic differences among Mexican American children (first, second, and third generation), non-Hispanic black children, and non-Hispanic white children; to compare the health status and health care needs of Mexican American children (first, second, and third generation) with those of non-Hispanic black children and non-Hispanic white children; and to determine whether first-generation Mexican American children have poorer health care access and utilization than do non-Hispanic white children, after controlling for health insurance status and socioeconomic status.

METHODS

The Third National Health and Nutrition Examination Survey was used to create a sample of 4372 Mexican American children (divided into 3 generational groups), 4138 non-Hispanic black children, and 4594 non-Hispanic white children, 2 months to 16 years of age. We compared parent/caregiver reports of health status and needs (perceived health of the child and reported illnesses), health care access (usual source of health care and specific provider), and health care utilization (contact with a physician within the past year, use of prescription medications, physician visit because of earache/infection, and hearing and vision screenings) for different subgroups within the sample.

RESULTS

More than two thirds of first-generation Mexican American children were poor and uninsured and had parents with low educational attainment. More than one fourth of first-generation children were perceived as having poor or fair health, despite experiencing similar or better rates of illnesses, compared with other children. Almost one half of first-generation Mexican American children had not seen a doctor in the past year, compared with one fourth or less for other groups. Health care needs among first-generation Mexican American children were lower, on the basis of reported illnesses, but perceived health status was worse than for all other groups. After controlling for health insurance coverage and socioeconomic status, first-generation Mexican American children and non-Hispanic black children were less likely than non-Hispanic white children to have a usual source of care, to have a specific provider, or to have seen or talked with a physician in the past year.

CONCLUSIONS

Of the 3 groups of children, Mexican American children had the least health care access and utilization, even after controlling for socioeconomic status and health insurance status. Our findings showed that Mexican American children had much lower levels of access and utilization than previously reported for Hispanic children on the whole. As a subgroup, first-generation Mexican American children fared substantially worse than second- or third-generation children. The discrepancy between poor perceived health status and lower rates of reported illnesses in the first-generation group leads to questions regarding generalized application of the "epidemiologic paradox." Given the overall growth of the Hispanic population in the United States and the relative growth of individual immigrant subgroups, the identification of subgroups in need is essential for the development of effective research and policy. Furthermore, taking generational status into account is likely to be revealing with respect to disparities in access to and utilization of pediatric services.

Dietary patterns associated with colon and rectal cancer: results from the Dietary Patterns and Cancer (DIETSCAN) Project

BACKGROUND

An analysis of dietary patterns or combinations of foods may provide insight regarding the influence of diet on the risk of colon and rectal cancer.

OBJECTIVE

A primary aim of the Dietary Patterns and Cancer (DIETSCAN) Project was to develop and apply a common methodologic approach to study dietary patterns and cancer in 4 European cohorts: the Alpha-Tocopherol Beta-Carotene Cancer Prevention Study (Finland-ATBC), the Netherlands Cohort Study (NLCS) on Diet and Cancer, the Swedish Mammography Cohort (SMC), and the Ormoni e Dieta nella Eziologia dei Tumori (Italy-ORDET). Three cohorts (ATBC, NLCS, and SMC) provided data on colon and rectal cancer for the present study.

DESIGN

The cohorts were established between 1985 and 1992; follow-up data were obtained from national cancer registries. The participants completed validated semiquantitative food-frequency questionnaires at baseline.

RESULTS

Exploratory factor analysis, conducted within each cohort, identified 3-5 stable dietary patterns. Two dietary patterns-Vegetables and Pork, Processed Meats, Potatoes (PPP)-were common across all cohorts. After adjustment for potential confounders, PPP was associated with an increased risk of colon cancer in the SMC women (quintile 4(multivariate) relative risk: 1.62; 95% CI: 1.12, 2.34; P for trend = 0.01). PPP was also associated with an increased risk of rectal cancer in the ATBC men (quintile 4(multivariate) relative risk: 2.21; 95% CI: 1.07, 4.57; P for trend = 0.05). Neither pattern was associated with the risk of colon or rectal cancer in the NLCS women and men.

CONCLUSION

Although certain dietary patterns may be consistent across European countries, associations between these dietary patterns and the risk of colon and rectal cancer are not conclusive.

Common and country-specific dietary patterns in four European cohort studies

The association between diet and cancer, predominantly investigated univariately, has often been inconsistent, possibly because of the large number of candidate risk factors and their high intercorrelations. Analysis of dietary patterns is expected to give more insight than analysis of single nutrients or foods. This study aimed to develop and apply a common methodological approach to determine dietary patterns in four cohort studies originating in Finland, the Netherlands, Sweden and Italy. Food items on each of the food frequency questionnaires were aggregated into 51 food groups, defined on the basis of their position in the diet pattern and possible relevance to cancer etiology. Exploratory factor analysis was used to analyze dietary patterns. Using a standardized approach, 3-5 stable dietary patterns were identified, explaining 20-29% of total variance in consumption of the food groups. Two dietary patterns, which explained most of the variance, were consistent across the studies. The first pattern was characterized by high consumption of (salad) vegetables, the second by high consumption of pork, processed meat and potatoes. In addition, a few specifically national food patterns were identified. Sensitivity analyses showed that the identified patterns were robust for number of factors extracted, distribution of input variables and energy adjustment. Our findings suggest that some important eating patterns are shared by the four populations under study, whereas other eating patterns are population specific.

Dietary intakes and serum nutrients differ between adults from food-insufficient and food-sufficient families: Third National Health and Nutrition Examination Survey, 1988-1994

Approximately 10.2 million persons in the United States sometimes or often do not have enough food to eat, a condition known as food insufficiency. Using cross-sectional data from the Third National Health and Nutrition Examination Survey (NHANES III), we examined whether dietary intakes and serum nutrients differed between adults from food-insufficient families (FIF) and adults from food-sufficient families (FSF). Results from analyses, stratified by age group and adjusted for family income and other important covariates, revealed several significant findings (P < 0.05). Compared with their food-sufficient counterparts, younger adults (aged 20-59 y) from FIF had lower intakes of calcium and were more likely to have calcium and vitamin E intakes below 50% of the recommended amounts on a given day. Younger adults from FIF also reported lower 1-mo frequency of consumption of milk/milk products, fruits/fruit juices and vegetables. In addition, younger adults from FIF had lower serum concentrations of total cholesterol, vitamin A and three carotenoids (alpha-carotene, beta-cryptoxanthin and lutein/zeaxanthin). Older adults (aged > or =60 y) from FIF had lower intakes of energy, vitamin B-6, magnesium, iron and zinc and were more likely to have iron and zinc intakes below 50% of the recommended amount on a given day. Older adults from FIF also had lower serum concentrations of high-density lipoprotein cholesterol, albumin, vitamin A, beta-cryptoxanthin and vitamin E. Both younger and older adults from FIF were more likely to have very low serum albumin (<35 g/L) than were adults from FSF. Our findings show that adults from FIF have diets that may compromise their health.

Choose a diet that is low in saturated fat and cholesterol and moderate in total fat: subtle changes to a familiar message

"Choose a diet that is low in saturated fat and cholesterol and moderate in total fat," issued in Nutrition and Your Health: Dietary Guidelines for Americans in the year 2000, has an interesting and lengthy history. The first guideline, for which there was extensive scientific data to show that dietary excess increased chronic disease risk, prompted much scientific discussion and debate when implemented as dietary guidance. Three major changes in the guideline are noted since it was issued in 1980, i.e., numerical goals for dietary fats; the applicability of recommended fat intakes for all individuals > or =2 y old; and rewording to emphasize reducing saturated fat and cholesterol intakes. The shift in emphasis includes the terminology moderate fat, which replaces the phrasing low fat. National data about the food supply, the population's dietary intake, knowledge, attitudes and behaviors, and nutritional status indicators (e.g., serum cholesterol levels) related to dietary fats help to monitor nutrition and health in the population. Experts consider that national data, although not without limitations, are sufficient to conclude that U.S. intakes of fats, as a proportion of energy, have decreased. The lower intakes of saturated fat and cholesterol are consistent with decreases in blood cholesterol levels and lower rates of coronary mortality over the past 30 years. Strategies are needed and some are suggested, to further encourage the population to achieve a dietary pattern that is low in saturated fat and cholesterol and moderate in total fat. Other suggestions are offered to improve national nutrition monitoring and surveillance related to the guideline.

Let the pyramid guide your food choices: capturing the total diet concept

This paper discusses how the guideline "Eat a variety of foods" became "Let the Pyramid guide your food choices," presents background information on the food guidance system upon which the Food Guide Pyramid is based and reviews methods that have been used to assess aspects of the total diet, i.e., the variety, moderation and proportionality, promoted by this guidance. The methods include measures of dietary variety, patterns based on Pyramid food group intakes and scoring methods comprised of multiple dietary components. Highlights of results from these methods include the following. Although approximately one third of the U.S. population eat at least some food from all Pyramid food groups, only approximately 1-3% eat the recommended number of servings from all food groups on a given day. Fruits are the most commonly omitted food group. Vegetables and meat are the groups most commonly met by adults, and dairy the most commonly met by youth. Intakes of specific types of vegetables (i.e., dark green, deep yellow) and of grains (i.e., whole grains) are well below that recommended; intakes of total fat and added sugars exceed current recommendations. Scoring methods show those diets of the majority of the population require improvement, and that diets improve with increases in education and income. This paper also discusses the limitations and strengths of these approaches, and concludes with suggestions to improve current food guidance and methods to assess the total diet.

Diet quality of young children who received nutrition education promoting lower dietary fat

OBJECTIVE

: To evaluate the impact of nutrition education promoting lower dietary fat on the overall diet quality in children using a multidimensional index that measures nutrient and food intakes in relation to US dietary recommendations.

DESIGN

: Prospective cohort study with two intervention and two control groups. Children with elevated low density lipoprotein (LDL) cholesterol were randomized to one of two intervention groups or an at-risk control group. The intervention children received either the parent-child autotutorial (PCAT) programme, a 10-week home-based self-instruction nutrition education programme, or nutrition counselling from a registered dietitian. Children with non-elevated plasma cholesterol formed the not-at-risk control group. Dietary and blood data were collected at baseline and at 3 months.

SETTING

: Paediatric practices in suburbs north of Philadelphia, PA.

SUBJECTS

: Two hundred and twenty-seven 4-10-year-old children with elevated LDL cholesterol between the 80th and 98th percentiles, and 76 age- and gender-matched children with non-elevated plasma cholesterol, were studied.

RESULTS

: Children who received PCAT or counselling significantly improved their overall diet quality (-0.6 and -0.4 change in diet quality index (DQI) scores) compared with at-risk control children. Children who received either form of nutrition education were more likely to meet the recommendations for three components of the DQI (total fat, saturated fat, sodium) (OR >1.7), but did not improve their intakes of three components of the DQI (vegetables and fruits, complex carbohydrates, calcium) at 3 months.

CONCLUSIONS

: Nutrition education promoting lower dietary fat improved children's overall diet quality. However, several dietary behaviours important for long-term health remained unchanged.

A focus group pilot study of tobacco smoking among psychosocial rehabilitation clients

OBJECTIVE

The study explored the perceived advantages and disadvantages of tobacco smoking and quitting among clients in psychosocial rehabilitation programs. Deeper understanding of such perceptions may be useful in creating maximally effective cessation and prevention interventions for this population.

METHODS

Five focus groups of six to ten persons were formed with a total of 40 clients from two programs. Participants included smokers and nonsmokers-including former smokers and smokers who explicitly were not interested in quitting smoking. The semistructured, researcher-facilitated discussions covered pros and cons of smoking and not smoking, barriers to and facilitators of abstinence, and other issues. Audiotapes of the group discussions were transcribed and analyzed qualitatively.

RESULTS

Participants emphasized their reasons for smoking, reasons for quitting or wanting to quit, views on smoking-related health concerns, perceived social costs and benefits of smoking, and strategies for quitting and maintaining abstinence. Many similarities between the focus groups' views and those of the general population were noted, along with some issues that are specific to having a mental illness or attending a psychosocial rehabilitation program, such as coping with psychiatric symptoms and limited access to information, support, and other coping methods. All of these views influenced participants' motivations and perceived readiness to smoke or to abstain, or to struggle between the two alternatives.

CONCLUSIONS

Issues and needs that are specific to smokers who use mental health services must be addressed in the development of smoking prevention and cessation interventions in psychosocial rehabilitation and other mental health programs. The importance of messages about smoking that clients receive from program rules, program staff, and other sources is highlighted, as is the possibility that the regulation of affect and stress provided by tobacco use is especially important for people experiencing psychiatric symptoms.

Differences in energy, nutrient, and food intakes in a US sample of Mexican-American women and men: findings from the Third National Health and Nutrition Examination Survey, 1988-1994

As Mexican-American women and men migrate to the United States and/or become more acculturated, their diets may become less healthy, increasing their risk of cardiovascular disease. Data from the Third National Health and Nutrition Examination Survey (1988-1994) were used to compare whether energy, nutrient, and food intakes differed among three groups of Mexican-American women (n = 1,449) and men (n = 1,404) aged 25-64 years: those born in Mexico, those born in the United States whose primary language was Spanish, and those born in the United States whose primary language was English. Percentages of persons who met the national dietary guidelines for fat, fiber, and potassium and the recommended intakes of vitamins and minerals associated with cardiovascular disease were also compared. In general, Mexican Americans born in Mexico consumed significantly less fat and significantly more fiber; vitamins A, C, E, and B6; and folate, calcium, potassium, and magnesium than did those born in the United States, regardless of language spoken. More women and men born in Mexico met the dietary guidelines or recommended nutrient intakes than those born in the United States. The heart-healthy diets of women and men born in Mexico should be encouraged among all Mexican Americans living in the United States, especially given the increasing levels of obesity and diabetes among this rapidly growing group of Americans.

The Pathways study: a model for lowering the fat in school meals

We describe the development and implementation of the Pathways school food service intervention during the feasibility phase of the Pathways study. The purpose of the intervention was to lower the amount of fat in school meals to 30% of energy to promote obesity prevention in third- through fifth-grade students. The Pathways nutrition staff and the food service intervention staff worked together to develop 5 interrelated components to implement the intervention. These components were nutrient guidelines, 8 skill-building behavioral guidelines, hands-on materials, twice yearly trainings, and monthly visits to the kitchens by the Pathways nutrition staff. The components were developed and implemented over 18 mo in a pilot intervention in 4 schools. The results of an initial process evaluation showed that 3 of the 4 schools had implemented 6 of the 8 behavioral guidelines. In an analysis of 5 d of school menus from 3 control schools, the lunch menus averaged from 34% to 40% of energy from fat; when the menus were analyzed by using the food preparation and serving methods in the behavioral guidelines, they averaged 31% of energy from total fat. This unique approach of 5 interrelated food service intervention components was accepted in the schools and is now being implemented in the full-scale phase of the Pathways study in 40 schools for 5 y.

Adolescents engaging in unhealthy weight control behaviors: are they at risk for other health-compromising behaviors?

OBJECTIVES

This study sought to determine whether adolescents engaging in weight control behaviors are at increased risk for tobacco, alcohol, and marijuana use; suicide ideation and attempts; and unprotected sexual activity.

METHODS

Data were collected on a nationally representative sample of 16,296 adolescents taking part in the 1993 Youth Risk Behavior Survey.

RESULTS

Adolescents using extreme weight control behaviors were at increased risk for health-compromising behaviors, while associations with other weight control behaviors were weak and inconsistent.

CONCLUSIONS

The findings have relevance to clinical work with youth, provide a better understanding of disordered eating, and open up a number of opportunities for future research.

The effect of changes in dietary fat on the food group and nutrient intake of 4- to 10-year-old children

OBJECTIVE

To determine how young children changed their overall diet when they changed their fat intake after 3 months of participating in a nutrition education demonstration study designed to lower low-density lipoprotein cholesterol and cardiovascular risk.

METHODS

Three 24-hour dietary recalls were collected from 303 4- to 10-year-old children at baseline and 3 months later. At both times, mean number of servings from food groups, grams of fat contributed from food groups, and intake of calories and nutrients were calculated and compared among quartiles of children formed according to change in their percent of calories from total fat after 3 months.

RESULTS

Children who reduced their percent of calories from total fat most (ie, by an average of 8.5%) after 3 months consumed fewer servings from meats, eggs, dairy, fats/oils, and breads but tended to increase their number of servings from lower-fat foods within those food groups, particularly from dairy foods. These children also increased their mean intake of fruits, vegetables, and desserts, and maintained average intakes of all nutrients (except vitamin D) in excess of two thirds of the respective recommended dietary allowance.

CONCLUSIONS

Young children who reduced their percent of calories from total fat in accordance with the current National Cholesterol Education Program recommendations accomplished this by reducing their overall intake of higher-fat foods, replacing higher-fat foods with lower-fat foods within several food groups, particularly within the dairy group (eg, drinking skim milk instead of whole milk) and by consuming more servings of fruits, vegetables, and very-low-fat desserts. These behaviors did not compromise their mean calorie or nutrient intakes, showing that it is possible for young children to lower their fat intake safely to reduce their risk of future heart disease.

A randomized trial of assertive community treatment for homeless persons with severe mental illness

BACKGROUND

This experiment evaluated the effectiveness of an innovative program of assertive community treatment (ACT) for homeless persons with severe and persistent mental illnesses.

METHODS

One hundred fifty-two homeless persons with severe and persistent mental illness were randomized to either the experimental ACT program or to usual community services. Baseline assessments included the Structured Clinical Interview for DSM-III-R, Quality-of-Life Interview, Colorado Symptom Index, and the Medical Outcomes Study 36-Item Short Form Health Survey. All assessments (except the Structured Clinical Interview) were repeated at the 2-, 6-, and 12-month follow-up evaluations.

RESULTS

Subjects in the ACT program used significantly fewer psychiatric inpatient days, fewer emergency department visits, and more psychiatric outpatient visits than the comparison subjects. The ACT subjects also spent significantly more days in stable community housing, and they experienced significantly greater improvements in symptoms, life satisfaction, and perceived health status.

CONCLUSIONS

Relative to usual community care, the ACT program for homeless persons with severe and persistent mental illness shifts the locus of care from crisis-oriented services to ongoing outpatient care and produces better housing, clinical, and life satisfaction outcomes.

Effects of family history of heart disease, apolipoprotein E phenotype, and lipoprotein(a) on the response of children's plasma lipids to change in dietary lipids

We examined the effects of family history of coronary artery disease (CAD), apolipoprotein E (apo E) phenotype, and lipoprotein(a) [Lp(a)] on the response of plasma lipids to change in dietary lipid intake after 3 mo of nutrition education in 125 children aged 4-10 y. The subjects were healthy children with elevated low-density-lipoprotein (LDL)-cholesterol concentrations who participated in the Children's Health Project, a nutrition-education program designed to lower plasma cholesterol by means of dietary modifications in accordance with recommendations of the National Cholesterol Education Program. Dietary and plasma lipids were measured by three 24-h recalls and assessments of two fasting plasma samples collected before and 3 mo after the start of intervention. Family history of CAD was determined by questionnaires administered to parents at baseline. Apo E phenotyping was done with isoelectric focusing followed by immunostaining; Lp(a) was measured with two-site immunoradiometric assays of frozen aliquots of plasma samples collected at baseline and 3 mo. After adjustment for intervention group, age, sex, and body mass index, analysis of covariance showed that baseline plasma lipid concentrations were the strongest independent predictors of change in plasma lipids after 3 mo. Plasma total and LDL-cholesterol concentrations in children with less family history of CAD were significantly more responsive to change in dietary cholesterol than concentrations in children with a stronger family history of CAD. Neither apo E phenotype nor Lp(a) significantly influenced change in plasma lipids independently or interactively with change in dietary lipids.

Comorbid bulimia nervosa and schizophrenia

OBJECTIVE

Despite literature citing the frequency of abnormal eating behavior in persons with schizophrenia, little attention has been paid to the comorbidity of eating disorders and schizophrenia. This case review explores the comorbidity of bulimia nervosa and schizophrenia and its possible clinical implications.

METHOD

The authors present four case reports of women with rigorously diagnosed schizophrenia who have eating-disordered behavior.

RESULTS

The first case describes a woman whose bulimia nervosa clearly preceded the onset of her schizophrenia. The second and third cases describe women who have many characteristics and risk factors for bulimia nervosa and whose bulimic symptoms significantly interact with psychotic symptoms. The fourth case describes a woman with bulimic behavior which is clearly responsive to psychosis. She does not have a history and behavioral profile of true bulimia nervosa.

DISCUSSION

These case reports extend support to a model that schizophrenia and bulimia may coexist in a complex, interactive fashion with important clinical implications.

Change in nutrient intakes, number of servings, and contributions of total fat from food groups in 4- to 10-year-old children enrolled in a nutrition education study

OBJECTIVE

To determine change in nutrient intakes, number of servings, and contributions of total fat from food groups in children who lowered their dietary fat intake.

DESIGN

A research and demonstration study designed to lower plasma low-density lipoprotein cholesterol level. There were four study groups: two intervention and two control groups. All children had hypercholesterolemia except for those in one control group. There 24-hour dietary recalls were collected on randomly assigned days over a 2-week period at baseline and 3 months after the intervention.

SUBJECTS

Three hundred three 4-to 10-year old children from suburbs north of Philadelphia, Pa.

INTERVENTIONS

One intervention involved a home-based, parent-child autotutorial program (PCAT group) with audiotaped stories and print materials for the children and their families; the other intervention involved one face-to-face counseling session with a registered dietitian (counseling group).

OUTCOME MEASURES

Change in mean nutrient intakes compared with the Recommended Dietary Allowance (RDA); change in number of servings and mean grams of total fat contributed from 10 different food groups.

STATISTICAL ANALYSES PERFORMED

Analyses of variance and chi 3 analyses.

RESULTS

Children in every study group had mean intakes of all nutrients (except vitamin D) greater than 67% of the RDA 3 months after the baseline measurement. Several food groups (ie, meats, dairy products, fats/oils, and desserts) provided less total fat to the diets of children who reduced their dietary lipid intake after 3 months (i.e., PCAT and counseling groups). These children also reduced the mean number of servings selected from these food groups. Within these same food groups, some children consumed fewer servings of higher fat foods and more servings of lower fat foods.

APPLICATIONS/CONCLUSIONS

Children who lowered their dietary fat intake after intervention reported both quantitative and qualitative changes in food choices from several food groups. These choices did not significantly reduce their nutrient intakes.

Detection of substance use disorders among psychiatric inpatients

This study examines the utility of the Addiction Severity Index (ASI) for detecting psychoactive substance use disorders (PSUDs) among psychiatric inpatients. Four hundred thirty-five inpatients at two inner-city psychiatric hospitals completed the ASI and the Structured Clinical Interview for DSM-III-R (SCID). Receiver operating characteristic (ROC) analysis assessed the optimal threshold ASI alcohol and drug composite scores to detect DSM-III-R PSUDs. The correlations of both the ASI alcohol and drug composite scores with their corresponding DSM-III-R PSUD categories were significant (p<.0001). However, the ROC analysis revealed that the ASI misses approximately 20% of SCID-positive PSUD cases. Specificity of the ASI, on the other hand, is quite good (95% to 98%), and optimal ASI threshold scores to rule out a PSUD among these patients are identified. The results also support the sensitivity of these patients to the toxic effects of illicit substance use.

Housing for persons with co-occurring mental and addictive disorders

Homelessness is a far too common outcome for persons with dual diagnoses. This chapter discusses existing housing barriers and suggests housing, treatment, and support services responsive to population need.

Modifying the PACT model to serve homeless persons with severe mental illness

The success of the Program for Assertive Community Treatment (PACT) has led to its replication with different client populations, especially those who are underserved by the traditional treatment system. This paper describes a program in Baltimore that has adapted the PACT model to serve homeless persons with severe mental illness. Although the essential ingredients and philosophy of the original model were maintained, the original team approach has been modified by the use of "miniteams." All staff share knowledge of all program clients through formal mechanisms such as daily meetings; however, each client is assigned to a miniteam composed of a clinical case manager, a psychiatrist, and a consumer advocate. Another deviation from the PACT model is that services can be time limited. The authors describe four phases of treatment and problems, including interventions characteristic of each phase.

The effects of arthroscopic partial lateral meniscectomy in an otherwise normal knee: a retrospective review of functional, clinical, and radiographic results

A retrospective review of patients who underwent arthroscopic partial lateral meniscectomy for lateral meniscus tears in otherwise normal knees was conducted to review the long-term functional, clinical, and radiographic results. Twenty-six patients (27 knees) were evaluated by questionnaire; 20 patients (21 knees) also underwent physical examination and radiographic analysis. Minimum follow-up was 5 years and mean follow-up was 8 years. Patient data were obtained from detailed questionnaires, knee examinations, and radiographs. Excellent or good results decreased from 92% at the time of maximal improvement to 62% at the most recent follow-up: 85% of patients were initially able to return to their preinjury activity level; however, only 48% were able to maintain this level of activity at the most recent follow-up. Seventy-two percent of patients had either one or no Fairbank changes and there was no statistical difference when comparing radiographic criteria in the operated and nonoperated knee. Early results for partial lateral meniscectomy can be quite good; however, significant deterioration of functional results and decreased activity level can occur. Radiographic changes did not correlate with subjective symptoms and functional outcome in our patient population. Our findings suggest that the functional outcome for patients undergoing partial lateral meniscectomy may deteriorate with time and it may be helpful to counsel patients concerning long-term expectations.

Schizophrenia: treatment outcomes research--editors' introduction

Considerable research over the past few decades on the nature and treatment of schizophrenia has yielded important advances to improve the outcomes of this disorder. Recent action plans, including the "Decade of the Brain," the National Institute of Mental Health (NIMH) A National Plan for Schizophrenia Research, and NIMH's report, Caring for People With Severe Mental Disorders: A National Plan of Research to Improve Services, promise major new advances over the next several years. As research advances, it is critical to ensure that patients in everyday practice receive the most effective treatments being developed. This issue of the Schizophrenia Bulletin reviews the research on outcomes of treatments for schizophrenia and lays out an agenda for available research knowledge to be translated into practice and for future research to improve outcomes.

Conventional antipsychotic medications for schizophrenia

This article reviews the existing evidence for the efficacy and effectiveness of conventional antipsychotic medications in the treatment of schizophrenia. Among the issues reviewed are their efficacy for acute symptom episodes and for long-term maintenance therapy, differential efficacy among medications, the gap between research-based efficacy rates and effectiveness rates in practice, dosing strategies, and the treatment of first-episode cases. Evidence for efficacy is overwhelming for reduction of positive symptoms but quite limited for other outcomes. Effectiveness in practice may be substantially less than efficacy in clinical trials, perhaps owing to patient heterogeneity, prescribing practices, and noncompliance. First-episode patients should be treated with antipsychotic medication, but perhaps at lower dosages, with consideration of a gradual decrease or discontinuation at 6 months to 1 year.

Assertive community treatment and case management for schizophrenia

This review examines the impact of assertive community treatment (ACT) and case management models on the use of inpatient hospitalization and other community mental health services, costs, and other clinical and social outcomes. ACT programs have been found to reduce hospitalization and increase use of community mental health services at an equivalent or reduced cost. Greater fidelity to the ACT model produced better outcomes. The impact of case management models is less consistent, but intensive case management programs also have been found to reduce hospitalization. We discuss limitations in past research and recommend future directions.