Women's perceived and partners' reported support for smoking cessation during pregnancy

Studies of the influence of social support on successful smoking cessation have been based on the smoker's perceptions only. In this pilot study of 58 couples, pregnant women who had smoked in the 30 days before pregnancy and their partners reported the positive and negative support for cessation they had received (women) or provided (partners). Mean levels of the women's and partners' perceptions of support were compared, and correlations of the two reports were analyzed while controlling for the effect of the couple's smoking status. Women's and partners' reports were similar except partners reported wanting the women to stop smoking more than women perceived. Women's and partners' perceived negative support were moderately correlated (r approximately equal to .48, p approximately equal to .001). Partner-reported positive support also was associated with women's perceived negative support (r approximately equal to .30, p approximately equal to .03). These relationships remained signif cant after controllingfor partners' and women's smoking status. Generally, partners reported giving more positive and less negative support than women perceived. Results suggest the need for further examination of couples' perceptions of support and the impact on smoking cessation during pregnancy.

Promoting smoking abstinence in pregnant and postpartum patients: a comparison of 2 approaches

OBJECTIVE

To compare the implementation, delivery, and implications for dissemination of 2 different maternal smoking-cessation/relapse-prevention interventions in managed care environments.

STUDY DESIGN

Healthy Options for Pregnancy and Parenting (HOPP) was a randomized, controlled efficacy trial of an intervention that bypassed the clinical setting. Stop Tobacco for OuR Kids (STORK) was a quasi-experimental effectiveness study of a point-of-service intervention. Both incorporated prenatal and postnatal components.

PATIENTS AND METHODS

Subjects in both studies were pregnant women who either smoked currently or had quit recently. The major intervention in HOPP was telephone counseling delivered by trained counselors, whereas the STORK intervention was delivered by providers and staff during prepartum, inpatient postpartum, and well-baby visits.

RESULTS

In HOPP, 97% of telephone intervention participants reported receiving 1 or more counselor calls. The intervention delayed but did not prevent postpartum relapse to smoking. Problems with intervention delivery related primarily to identification of the target population and acceptance of repeated calls. STORK delivered 1 or more cessation contacts to 91% of prenatal smokers in year 1, but the rate of intervention delivery declined in years 2 and 3. Modest differences were obtained in sustained abstinence between 6 and 12 months postpartum, but not in point prevalence abstinence at 12 months.

CONCLUSIONS

The projects were compared using 4 of the 5 dimensions of the RE-AIM model including reach, adoption, implementation, and maintenance. It was difficult to apply the fifth dimension, efficacy, because of the differences in study design and purpose of the interventions. The strengths and limitations of each project were identified, and it was concluded that a combined intervention that incorporates elements of both HOPP and STORK would be optimal if it could be implemented at reasonable cost.

Chronic care clinics for diabetes in primary care: a system-wide randomized trial

OBJECTIVE

To evaluate the impact of primary care group visits (chronic care clinics) on the process and outcome of care for diabetic patients.

RESEARCH DESIGN AND METHODS

We evaluated the intervention in primary care practices randomized to intervention and control groups in a large-staff model health maintenance organization (HMO). Patients included diabetic patients > or = 30 years of age in each participating primary care practice, selected at random from an automated diabetes registry. Primary care practices were randomized within clinics to either a chronic care clinic (intervention) group or a usual care (control) group. The intervention group conducted periodic one-half day chronic care clinics for groups of approximately 8 diabetic patients in their respective doctor's practice. Chronic care clinics consisted of standardized assessments; visits with the primary care physician, nurse, and clinical pharmacist; and a group education/peer support meeting. We collected self-report questionnaires from patients and data from administrative systems. The questionnaires were mailed, and telephoned interviews were conducted for nonrespondents, at baseline and at 12 and 24 months; we queried the process of care received, the satisfaction with care, and the health status of each patient. Serum cholesterol and HbA1c levels and health care use and cost data was collected from HMO administrative systems.

RESULTS

In an intention-to-treat analysis at 24 months, the intervention group had received significantly more recommended preventive procedures and helpful patient education. Of five primary health status indicators examined, two (SF-36 general health and bed disability days) were significantly better in the intervention group. Compared with control patients, intervention patients had slightly more primary care visits, but significantly fewer specialty and emergency room visits. Among intervention participants, we found consistently positive associations between the number of chronic care clinics attended and a number of outcomes, including patient satisfaction and HbA1c levels.

CONCLUSIONS

Periodic primary care sessions organized to meet the complex needs of diabetic patients imrproved the process of diabetes care and were associated with better outcomes.

Effect of improved glycemic control on health care costs and utilization

CONTEXT

Because of the additional costs associated with improving diabetes management, there is interest in whether improved glycemic control leads to reductions in health care costs, and, if so, when such cost savings occur.

OBJECTIVE

To determine whether sustained improvements in hemoglobin A(1c) (HbA(1c)) levels among diabetic patients are followed by reductions in health care utilization and costs.

DESIGN AND SETTING

Historical cohort study conducted in 1992-1997 in a staff-model health maintenance organization (HMO) in western Washington State.

PARTICIPANTS

All diabetic patients aged 18 years or older who were continuously enrolled between January 1992 and March 1996 and had HbA(1c) measured at least once per year in 1992-1994 (n = 4744). Patients whose HbA(1c) decreased 1% or more between 1992 and 1993 and sustained the decline through 1994 were considered to be improved (n = 732). All others were classified as unimproved (n = 4012).

MAIN OUTCOME MEASURES

Total health care costs, percentage hospitalized, and number of primary care and specialty visits among the improved vs unimproved cohorts in 1992-1997.

RESULTS

Diabetic patients whose HbA(1c) measurements improved were similar demographically to those whose levels did not improve but had higher baseline HbA(1c) measurements (10.0% vs 7.7%; P<.001). Mean total health care costs were $685 to $950 less each year in the improved cohort for 1994 (P =.09), 1995 (P =.003), 1996 (P =.002), and 1997 (P =.01). Cost savings in the improved cohort were statistically significant only among those with the highest baseline HbA(1c) levels (>/=10%) for these years but appeared to be unaffected by presence of complications at baseline. Beginning in the year following improvement (1994), utilization was consistently lower in the improved cohort, reaching statistical significance for primary care visits in 1994 (P =.001), 1995 (P<.001), 1996 (P =.005), and 1997 (P =.004) and for specialty visits in 1997 (P =.02). Differences in hospitalization rates were not statistically significant in any year.

CONCLUSION

Our data suggest that a sustained reduction in HbA(1c) level among adult diabetic patients is associated with significant cost savings within 1 to 2 years of improvement.

Predictors of participation in primary care group-format back pain self-care interventions

OBJECTIVE

The goal of this study was to explain how primary care back pain patients who volunteer for a group-format self-care intervention differ from nonvolunteers. This is relevant to the generalizability of studies that rely on volunteers as well as the characteristics of patients who do not seek out self-care interventions.

SETTING

This study was conducted at a large health maintenance organization in western Washington state.

PATIENTS

"Volunteers" (n = 481) were primary care back pain patients participating in randomized trials of a self-management intervention who were recruited through passive nonintensive means (a mailed invitation). "Nonvolunteers" (n = 967) consisted of a representative sample of consecutive back pain patients. We compared the baseline characteristics of these two groups.

RESULTS

The relatively small percentage (8%) of primary care back pain patients who volunteered for, and ultimately participated in, group self-management classes tended to be white, older, better educated, and more likely to be retired than nonvolunteers. The two groups did not differ significantly on most clinical measures, including pain intensity and persistence. Patients experiencing the highest (and lowest) levels of pain-related activity interference were less likely to volunteer than those with moderate activity limitations, however.

CONCLUSIONS

Those individuals volunteering to participate in a group-format self-care intervention in a primary care setting differed from nonvolunteers primarily on demographic measures as opposed to clinical measures. Back pain patients experiencing the highest levels of activity limitations were somewhat less likely to participate than those with moderate activity limitations. Recruitment for effective self-care interventions is an important issue in determining their impact on a population basis.

Effectiveness of physician-based assessment and counseling for exercise in a staff model HMO

BACKGROUND

Few primary care physicians routinely counsel for exercise, despite the benefits of physical activity and the high prevalence of inactivity. The objective of this study is to assess the effectiveness of Physician-Based Assessment and Counseling for Exercise (PACE), a brief, behavior-based tool for primary care providers counseling healthy adults.

METHODS

This study is a randomized controlled trial of 812 patients age 30 years or older registered for well visits at 32 primary care physician offices at a staff model health maintenance organization. Intervention physicians were trained to deliver PACE exercise counseling protocols at the index visit, and one reminder telephone call occurred at 1 month. An enhanced intervention group received additional activity reminders.

RESULTS

At the 6-month follow-up, the control group did not differ significantly from the intervention group for energy expended (2,048 kcal/week versus 2,108 kcal/ week, P = 0.77), time spent in walking or other moderate to vigorous activities (202 min/week versus 187 min/ week, P = 0.99), mental health, physical function, or behaviors previously shown to predict activity change. Among the intervention patients, the stages-of-change score for Contemplators increased significantly compared with controls (P = 0.03), but without a significant change in energy expended. Baseline levels of physical activity counseling were high (50%), as were baseline patient physical activity levels (61% exercised at least three times a week).

CONCLUSIONS

These results suggest that a one-time PACE counseling session with minimal reinforcement, in a setting with high baseline levels of activity, does not further increase activity. The finding that Contemplators advanced in stage of behavior change suggests that further studies are needed to examine long-term, repeated counseling interventions.

Tobacco, alcohol, and caffeine use and cessation in early pregnancy

OBJECTIVES

Little is known about what happens when individuals attempt to make multiple behavior changes simultaneously. Pregnant women in particular are often in the position of needing to change several behaviors at once, including giving up more than one pleasurable substance. We investigated the success of pregnant women in spontaneously quitting tobacco, alcohol, or caffeine, alone or in combination.

METHODS

Pregnant women (n = 7489) were identified in the practices of large health maintenance organizations in Seattle and Minneapolis and were interviewed by telephone. Analyses examined the patterns of using and quitting more than one substance, and the extent to which using more than one substance predicts ability to quit other substances.

RESULTS

Use of the three substances tended to cluster within individuals. Users of multiple substances were less likely to quit each substance than users of single substances. However, in the subgroup of multiple substance users who had quit one substance, having quit a second substance was more, rather than less, common. In multivariate analyses predicting quitting, demographic variables, and not having been pregnant previously were significant predictors of quitting each substance; being a nonsmoker predicted quitting alcohol, and being a nonsmoker and nondrinker predicted quitting caffeine.

CONCLUSIONS

The reasons for difficulty in quitting more than one substance are unknown but may include the difficulty of formulating appropriate behavioral strategies or less concern about healthy behavior in pregnancy. Many women in the study successfully quit using two substances, however, and counseling should focus on achieving that outcome.

Stress, depressive symptoms, and smoking cessation among pregnant women

Perceived stress and depressive symptoms were examined as correlates and predictors of smoking cessation during pregnancy in a sample of 819 pregnant smokers (454 baseline smokers and 365 baseline quitters). Women who quit early in pregnancy had lower levels of stress and depressive symptoms than baseline smokers. Adjusting for level of addiction and other demographic factors related to stress and depressive symptoms eliminated the significant association between depressive symptoms and smoking cessation. Lower levels of stress and depressive symptoms were not predictive of cessation in later pregnancy. Prenatal healthcare providers should continue to assess level of addiction and provide targeted intensive cessation interventions. Interventions that reduce stress and depression may also be of benefit to women who are continuing smokers in early pregnancy.

Evaluation of a minimal self-help smoking cessation intervention following cervical cancer screening

OBJECTIVE

This study was undertaken to evaluate a smoking cessation intervention provided to women smokers as follow-up to cervical cancer screening.

METHODS

Women who had had a Pap test in the prior month (N = 4,053) were called to complete a survey that assessed smoking status; 580 identified smokers were randomized to receive Usual care (n = 292) or a Self-help intervention (n = 288) that included a self-help booklet, a smoking and reproductive health information card, and three telephone counseling calls. Women were followed up at 6 and 15 months post-base line.

RESULTS

Cessation rates in the Usual care (UC) and Self-help (SH) groups did not differ at the 6-month (UC 10.5% vs SH 10.9%, P = 0.56) or 15-month follow-up (UC 15.5% vs SH 10.6%, P = 0.17). Among women with an abnormal Pap test result there were no differences by study group in cessation rates at 6-month (UC 9.8% vs SH 11.0%, P = 0.71) or 15-month follow-up (UC 14.6% vs SH 13.4%, P = 0.96).

CONCLUSION

Integrating interventions into the clinical setting and involving providers at the point of care may have greater potential for capitalizing on this "teachable moment."

Chronic care clinics: a randomized controlled trial of a new model of primary care for frail older adults

OBJECTIVE

To determine whether a new model of primary care, Chronic Care Clinics, can improve outcomes of common geriatric syndromes (urinary incontinence, falls, depressive symptoms, high risk medications, functional impairment) in frail older adults.

DESIGN

Randomized controlled trial with 24 months of follow-up. Physician practices were randomized either to the Chronic Care Clinics intervention or to usual care.

SETTING

Nine primary care physician practices that comprise an ambulatory clinic in a large staff-model HMO in western Washington State.

PARTICIPANTS

Those patients aged 65 and older in each practice with the highest risk for being hospitalized or experiencing functional decline.

INTERVENTION

Intervention practices (5 physicians, 96 patients) held half-day Chronic Care Clinics every 3 to 4 months. These clinics included an extended visit with the physician and nurse dedicated to planning chronic disease management; a pharmacist visit that emphasized reduction of polypharmacy and high-risk medications; and a patient self-management/support group. Control practices (4 physicians, 73 patients) received usual care.

MEASUREMENTS

Changes in self-reported urinary incontinence, frequency of falls, depressive symptoms, physical function, and satisfaction were analyzed using an intention-to-treat analysis adjusted for baseline differences, covariates, and practice-level variation. Prescriptions for high-risk medications and cost/utilization data obtained from administrative data were similarly analyzed.

RESULTS

After 24 months, no significant improvements in frequency of incontinence, proportion with falls, depression scores, physical function scores, or prescriptions for high risk medications were demonstrated. Costs of medical care including frequency of hospitalization, hospital days, emergency and ambulatory visits, and total costs of care were not significantly different between intervention and control groups. A higher proportion of intervention patients rated the overall quality of their medical care as excellent compared with control patients (40.0% vs 25.3%, P = .10).

CONCLUSIONS

Although intervention patients expressed high levels of satisfaction with Chronic Care Clinics, improved outcomes for selected geriatric syndromes were not demonstrated. These findings suggest the need for developing greater system-wide support for managing geriatric syndromes in primary care and illustrate the challenges of conducting practice improvement research in a rapidly changing delivery system.

Prevention of relapse in women who quit smoking during pregnancy

OBJECTIVES

This study is an evaluation of relapse prevention interventions for smokers who quit during pregnancy.

METHODS

Pregnant smokers at 2 managed care organizations were randomized to receive a self-help booklet only, prepartum relapse prevention, or prepartum and postpartum relapse prevention. Follow-up surveys were conducted at 28 weeks of pregnancy and at 8 weeks, 6 months, and 12 months postpartum.

RESULTS

The pre/post intervention delayed but did not prevent postpartum relapse to smoking. Prevalent abstinence was significantly greater for the pre/post intervention group than for the other groups at 8 weeks (booklet group, 30%; prepartum group, 35%; pre/post group, 39%; P = .02 [different superscripts denote differences at P < .05]) and at 6 months (booklet group, 26%, prepartum group, 24%; pre/post group, 33%; P = .04) postpartum. A nonsignificant reduction in relapse among the pre/post group contributed to differences in prevalent abstinence. There was no difference between the groups in prevalent abstinence at 12 months postpartum.

CONCLUSIONS

Relapse prevention interventions may need to be increased in duration and potency to prevent post-partum relapse.

Use and cost effectiveness of smoking-cessation services under four insurance plans in a health maintenance organization

BACKGROUND

Lack of information about the effect of insurance coverage on the demand for and use of smoking-cessation services has prevented widescale adoption of coverage for such services.

METHODS

In a longitudinal, natural experiment, we compared the use and cost effectiveness of three forms of coverage with those of a standard form of coverage for smoking-cessation services that included a behavioral program and nicotine-replacement therapy. The study involved seven employers and a total of 90,005 adult enrollees. The standard plan offered 50 percent coverage of the behavioral program and full coverage of nicotine-replacement therapy. The other plans offered 50 percent coverage of both the behavioral program and nicotine-replacement therapy (reduced coverage), full coverage of the behavioral program and 50 percent coverage of nicotine-replacement therapy (flipped coverage), or full coverage of both the behavioral program and nicotine-replacement therapy.

RESULTS

Estimated annual rates of use of smoking-cessation services ranged from 2.4 percent (among smokers with reduced coverage) to 10 percent (among those with full coverage). Smoking-cessation rates ranged from 28 percent (among users with full coverage) to 38 percent (among those with standard coverage). The estimated percentage of all smokers who would quit smoking per year as a result of using the services ranged from 0.7 percent (with reduced coverage) to 2.8 percent (with full coverage). The average cost to the health plan per user who quit smoking ranged from $797 (with standard coverage) to $1,171 (with full coverage). The annual cost per smoker ranged from $6 (with reduced coverage) to $33 (with full coverage). The annual cost per enrollee ranged from $0.89 (with reduced coverage) to $4.92 (with full coverage).

CONCLUSIONS

Use of smoking-cessation services varies according to the extent of coverage, with the highest rates of use among smokers with full coverage. Although the rate of smoking cessation among the benefit users with full coverage was lower than the rates among users with plans requiring copayments, the effect on the overall prevalence of smoking was greater with full coverage than with the cost-sharing plans.

Use of health services by children of smokers and nonsmokers in a health maintenance organization

OBJECTIVES

Use of health services by children of smokers and nonsmokers was compared to assess whether exposure to environmental tobacco smoke resulted in greater use of health services among children of smokers.

METHODS

Primary care and emergency room visits, asthma-related prescriptions, and inpatient stays over the 42-month study period were compared for children of smokers (n = 498) and nonsmokers (n = 1062) who were enrolled in a health maintenance organization. Parents of children aged 1 through 11 years were identified from participants in 2 randomized smoking cessation trials.

RESULTS

After adjustment for parental age, education, and health status and for child's age, there were no differences between children of smokers and children of nonsmokers in use of primary care or emergency room visits, asthma-related prescriptions, or inpatient stays. However, among those with any preventive care visits, children of smokers had significantly fewer visits than children of nonsmokers.

CONCLUSIONS

Further study is needed to elucidate whether parents who smoke underutilize health services for their children or use services differently from nonsmoking parents and whether these differences have cost implications.

Partner smoking status and pregnant smoker's perceptions of support for and likelihood of smoking cessation

Perceptions of support for cessation of smoking during pregnancy, likelihood of quitting, and partner smoking status were explored in a sample of 688 pregnant smokers (372 baseline smokers and 316 baseline quitters). Women with nonsmoking partners were significantly more likely to be baseline quitters than women with partners who smoked. Baseline quitters reported significantly more positive support from their partners than did continuing smokers (p = .02). Neither partner smoking status nor partner support at baseline was associated with cessation or relapse later in pregnancy. Women reported greater support, both positive and negative, from nonsmoking partners than from partners who smoked (p = .001). Among partner smokers, those who were trying to quit were perceived to be particularly supportive. Cessation interventions for expectant fathers may increase pregnant women's success at quitting.

Predicting hospitalization and functional decline in older health plan enrollees: are administrative data as accurate as self-report?

OBJECTIVE

To compare the predictive accuracy of two validated indices, one that uses self-reported variables and a second that uses variables derived from administrative data sources, to predict future hospitalization. To compare the predictive accuracy of these same two indices for predicting future functional decline.

DESIGN

A longitudinal cohort study with 4 years of follow-up.

SETTING

A large staff model HMO in western Washington State.

PARTICIPANTS

HMO Enrollees 65 years and older (n = 2174) selected at random to participate in a health promotion trial and who completed a baseline questionnaire.

MEASUREMENT

Predicted probabilities from the two indices were determined for study participants for each of two outcomes: hospitalization two or more times in 4 years and functional decline in 4 years, measured by Restricted Activity Days. The two indices included similar demographic characteristics, diagnoses, and utilization predictors. The probabilities from each index were entered into a Receiver Operating Characteristic (ROC) curve program to obtain the Area Under the Curve (AUC) for comparison of predictive accuracy.

RESULTS

For hospitalization, the AUC of the self-report and administrative indices were .696 and .694, respectively (difference between curves, P = .828). For functional decline, the AUC of the two indices were .714 and .691, respectively (difference between curves, P = .144).

CONCLUSIONS

Compared with a self-report index, the administrative index affords wider population coverage, freedom from nonresponse bias, lower cost, and similar predictive accuracy. A screening strategy utilizing administrative data sources may thus prove more valuable for identifying high risk older health plan enrollees for population-based interventions designed to improve their health status.

Differences in preconceptional and prenatal behaviors in women with intended and unintended pregnancies

OBJECTIVES

This study examined whether pregnancy intention was associated with cigarette smoking, alcohol drinking, use of vitamins, and consumption of caffeinated drinks prior to pregnancy and in early pregnancy.

METHODS

Data from a telephone survey of 7174 pregnant women were analyzed.

RESULTS

In comparison with women whose pregnancies were intended, women with unintended pregnancies were more likely to report cigarette smoking and less likely to report daily vitamin use. Women with unintended pregnancies were also less likely to decrease consumption of caffeinated beverages or increase daily vitamin use.

CONCLUSIONS

Pregnancy intention was associated with health behaviors, prior to pregnancy and in early pregnancy, that may influence pregnancy course and birth outcomes.

Partner smoking status and pregnant smoker's perceptions of support for and likelihood of smoking cessation

Perceptions of support for cessation of smoking during pregnancy, likelihood of quitting, and partner smoking status were explored in a sample of 688 pregnant smokers (372 baseline smokers and 316 baseline quitters). Women with nonsmoking partners were significantly more likely to be baseline quitters than women with partners who smoked. Baseline quitters reported significantly more positive support from their partners than did continuing smokers (p = .02). Neither partner smoking status nor partner support at baseline was associated with cessation or relapse later in pregnancy. Women reported greater support, both positive and negative, from nonsmoking partners than from partners who smoked (p = .001). Among partner smokers, those who were trying to quit were perceived to be particularly supportive. Cessation interventions for expectant fathers may increase pregnant women's success at quitting.

Functional status in coronary artery disease: a one-year prospective study of the role of anxiety and depression

PURPOSE

Although coronary disease is the second most common cause of work and functional disability, little is known about the relative contributions of biomedical and psychosocial factors to this disability. This study was conducted to determine the associations of depression and anxiety with self-reported physical function and activity interference in patients with coronary artery disease.

METHODS

This was a 1-year prospective cohort study of 198 HMO members who had elective cardiac catheterization for coronary artery disease in 1992. Measures included: severity of coronary artery stenosis from cardiac catheterization reports; anxiety and depression severity using interviewer-administered Hamilton Anxiety and Depression Rating Scales; and self-reported physical function and activity interference.

RESULTS

At the time of catheterization, patients' self-reported physical function differed significantly by number of main coronary vessels stenosed >70% (P <0.03), by anxiety quartiles (P = 0.001), and by depression quartiles (P = 0.001). At 1 year, physical function was no longer associated with the number of main coronary vessels stenosed at baseline, but still was significantly associated with baseline anxiety (P <0.001) and depression quartiles (P = 0.01). Moreover, change in physical function scores from baseline to 12 months was associated with baseline anxiety (P <0.001) or depression (P <0.001) quartiles, but not with baseline number of occluded coronaries. Results for activity interference were similar to those for physical function. These associations were largely unchanged when corrected for age, sex, education, social class, medical versus surgical management of CAD, and degree of medical comorbidity.

CONCLUSION

Anxiety and depression have a significant and persistent effect on physical function in patients with coronary artery disease. Although current treatment methods appear to neutralize the influence of coronary stenosis on physical function during the year following catheterization, this is not true for anxiety and depression.

Recruiting African-American older adults for a community-based health promotion intervention: which strategies are effective?

INTRODUCTION

The purpose of this article is to examine the effectiveness of recruitment strategies used to recruit African-American older adults for a senior center-based health promotion trial with a 6-month exercise component.

METHODS

We compared multiple strategies for recruiting participants from senior center members and other older adults residing in the surrounding predominantly African-American community. The phonathon, direct telephone recruitment by senior center leadership, is compared with traditional approaches.

RESULTS

All recruiting strategies combined yielded a total of 120 participants. Phonathons involving five or six senior center board members in two half-day sessions yielded 40 participants or 33% of all participants. Strategies categorized as printed media yielded 39 participants or 33% of all participants. Strategies categorized as word-of-mouth yielded 31 participants or 26% of all participants. Remaining approaches accounted for an additional 10 participants or 8% of all participants.

CONCLUSIONS

Our results support employing a multifaceted recruitment approach and demonstrate the importance of strong linkages between the research team and community leaders in conducting health promotion research in minority communities. An innovative approach, the phonathon, may be a potentially important recruitment strategy.

A randomized trial of self-help materials, personalized feedback, and telephone counseling with nonvolunteer smokers

The incremental effects of (a) a self-help booklet alone, (b) self-help booklet with computer-generated personalized feedback, and (c) self-help booklet, personalized feedback, and outreach telephone counseling were evaluated in a population-based, nonvolunteer sample of smokers. Smokers (N = 1,137) were identified through a telephone survey of a random sample of 5,903 enrollees in a health maintenance organization and randomized to a no-treatment control group or 1 of the 3 intervention conditions. Smoking status was ascertained 3, 12, and 21 months postrandomization. Cotinine validation of self-reported cessation was obtained at the 12-month follow-up. Overall, the telephone counseling significantly increased smoking cessation at the 3-month follow-up, but not at 12 or 21 months. Among smokers who were precontemplative at baseline, telephone counseling significantly increased prevalent abstinence at 3 and 12 months and continuous abstinence at 21 months (defined as self-reported abstinence at 3, 12, and 21 months).

Does walking decrease the risk of cardiovascular disease hospitalizations and death in older adults?

OBJECTIVES

The purpose of this study was to determine whether walking is associated with a reduced risk of cardiovascular disease hospitalization and death in community-dwelling older men and women.

DESIGN

A prospective study, with follow-up time of 4 to 5 years (average 4.2 years).

SETTING

A western Washington health maintenance organization.

PARTICIPANTS

Men and women aged 65 years and older from a random sample of HMO enrollees invited by mail to participate in a health promotion intervention trial (36% accepted the invitation and completed questionnaires). This report is based on 1645 older adults without severe disability and without history of heart disease. Vital status ascertainment was complete (100%), and only 2.6% did not complete the follow-up.

MEASUREMENTS

Reported frequency and duration of walking for exercise, work, errands, pleasure, and hiking in the 2 weeks before baseline were used to classify hours of walking per week. The two main outcomes were: (1) cardiovascular disease hospitalizations with a discharge diagnosis of coronary (ICD-9-CM 410-414) or other cardiovascular diseases (ICD-9-CM 390-409, 415-448) documented by computerized hospitalization records and (2) death. Numerous potential confounding factors were considered, including age, sex, treated high blood pressure, current estrogen use and chronic disease score (ascertained by computerized medical and pharmacy records), and ethnicity, education, income, physical function, self-rated health status, smoking, alcohol intake, and body mass index (ascertained by self-report on the mailed questionnaire).

RESULTS

Walking more than 4 hours/week was associated significantly with a reduced risk of cardiovascular disease hospitalization in both sexes combined compared with walking less than 1 hour/week (age and sex-adjusted relative risk = 0.69; 95% confidence interval, 0.52-0.90). This association was not altered by adjustment for baseline cardiovascular risk factors and indicators of general health status. The association was present in all age groups, among those with and without physical limitations, and also among those who did and did not also participate in more vigorous physical activities. Walking more than 4 hours/week was also associated with a reduced risk of death (age and sex-adjusted relative risk = 0.73; 95% confidence interval, 0.48-1.10), however, this association was substantially diminished by adjustment for cardiovascular risk factors and measures of general health status.

CONCLUSIONS

Walking more than 4 hours/week may reduce the risk of hospitalization for cardiovascular disease events. The association of walking more than 4 hours/week with reduced risk of death may be mediated by effects of walking on other risk factors. These findings provide much stronger evidence than previously available for advising older men and women to embark on or maintain a sustained program of walking to prevent cardiovascular disease events.

A randomized trial of self-help materials, personalized feedback, and telephone counseling with nonvolunteer smokers

The incremental effects of (a) a self-help booklet alone, (b) self-help booklet with computer-generated personalized feedback, and (c) self-help booklet, personalized feedback, and outreach telephone counseling were evaluated in a population-based, nonvolunteer sample of smokers. Smokers (N = 1,137) were identified through a telephone survey of a random sample of 5,903 enrollees in a health maintenance organization and randomized to a no-treatment control group or 1 of the 3 intervention conditions. Smoking status was ascertained 3, 12, and 21 months postrandomization. Cotinine validation of self-reported cessation was obtained at the 12-month follow-up. Overall, the telephone counseling significantly increased smoking cessation at the 3-month follow-up, but not at 12 or 21 months. Among smokers who were precontemplative at baseline, telephone counseling significantly increased prevalent abstinence at 3 and 12 months and continuous abstinence at 21 months (defined as self-reported abstinence at 3, 12, and 21 months).

Responsiveness of health status measures to change among older adults

OBJECTIVE

This study examines the ability of commonly used self-reported health status measures to detect important changes in health (responsiveness) in older adults.

DESIGN

We compared changes in health status measures over the year among subgroups of a cohort of seniors: those who experienced an intervening illness, hospitalization or increase in drug regimen, and those who didn't. Differences between the two groups in changes in the measures were quantitated using Guyatt's responsiveness statistic and receiver operating characteristic curves (ROC).

SETTING

Staff model HMO.

PARTICIPANTS

1379 senior HMO enrollees who were participants in a health promotion trial and provided complete information at baseline and one year later.

MEASUREMENTS

The following self-reported health status measures were evaluated: restricted activity days, bed disability days, the Medical Outcomes Study physical function scale, self-evaluated health, and a positive affect scale.

MAIN RESULTS

All measures except the positive affect scale were able to discriminate significantly between seniors who were or were not hospitalized and/or reported a major illness in the intervening year. The two disability days measures showed the best responsiveness for all indicators of worsening health and included 70%-80% of the area under the ROC curves for major illness defined by hospitalization or self-report.

CONCLUSIONS

Commonly used, brief self-reported physical health status measures are responsive to intervening illness among relatively healthy seniors supporting their use in longitudinal geriatric research.

Factors associated with participation in a senior health promotion program

The health status and life-style characteristics of participants in a senior health promotion program were compared with those of nonparticipants from the same HMO enrollee population. Nonparticipation was associated with lower income, less education, and lower involvement in community organizations. Although nonparticipants smoked more and evaluated their health less favorably than did participants, other risky behaviors and health status indicators differed little between the groups.

Evaluation of intrinsic and extrinsic motivation interventions with a self-help smoking cessation program

Personalized feedback and a financial incentive, developed from an intrinsic/extrinsic motivation framework, were evaluated as adjuncts to self-help materials for smoking cessation. Ss (N = 1,217) were randomized to 4 treatment groups and were followed up at 3 and 12 months. Consistent with hypotheses derived from the motivation framework, the financial incentive increased the use of self-help materials, did not increase cessation rates among program users, and was associated with higher relapse rates among those who did manage to quit. The personalized feedback increased both smoking cessation and use of the materials 3 months after distribution of the materials. Continuous abstinence (abstinence at 3 and 12 months) in the group that received the personalized feedback alone was twice the rate of the other groups.

Tracking progress toward national health objectives in the elderly: what do restricted activity days signify?

Restricted activity days is the measure by which the 1990 health objectives for prevention of functional disability in older adults will be evaluated. Yet its significance in older populations is poorly understood. We evaluated its use as an outcome measure for a randomized trial designed to impact upon physical function in elderly HMO enrollees. As predicted, restricted activity days was more correlated with physical disability measures than with other health status measures. Distributional properties and rates of missing data were shortcomings.

Evaluation of intrinsic and extrinsic motivation interventions with a self-help smoking cessation program

Personalized feedback and a financial incentive, developed from an intrinsic/extrinsic motivation framework, were evaluated as adjuncts to self-help materials for smoking cessation. Ss (N = 1,217) were randomized to 4 treatment groups and were followed up at 3 and 12 months. Consistent with hypotheses derived from the motivation framework, the financial incentive increased the use of self-help materials, did not increase cessation rates among program users, and was associated with higher relapse rates among those who did manage to quit. The personalized feedback increased both smoking cessation and use of the materials 3 months after distribution of the materials. Continuous abstinence (abstinence at 3 and 12 months) in the group that received the personalized feedback alone was twice the rate of the other groups.

Tubal sterilization and the long-term risk of hysterectomy

To assess the effect of tubal sterilization on the risk of hysterectomy, we studied 7414 women aged 20 to 49 years who had had a tubal sterilization at a health maintenance organization between January 1, 1968, and December 31, 1983. Compared with a population-based cohort of nonsterilized women, women sterilized while 20 to 29 years old were 3.4 times more likely to have had a subsequent hysterectomy (95% confidence interval, 2.4 to 4.7). Adjustment for the effects of potential confounders with a subset of 276 women did not appreciably alter this association. For multivariate comparisons with 5323 wives of vasectomized men, there was no significant elevation in the risk of hysterectomy following sterilization among women sterilized while 20 to 29 years old. Tubal sterilization was not associated with hysterectomy for married women who underwent tubal sterilization at age 30 or older. These results do not support a biological basis for the relationship between tubal sterilization and hysterectomy.

Participation in a smoking cessation program: a population-based perspective

We examined factors associated with participation in an HMO-based, self-help smoking cessation trial by comparing participants with nonparticipating smokers who responded to a prior health survey. Recruitment to the trial was accomplished through the HMO's monthly magazine sent to all enrollee households, and the health survey involved a random sample of the enrollee population. Participants were more likely to be female, older, better educated, and heavier smokers with more attempts to quit in the past. Participants consistently reported poorer levels of health status (self-perceived health and energy, life satisfaction, depression, and symptoms), less healthy lifestyles (exercise and dietary fat), and a greater conviction that smoking cessation would improve how they feel than nonparticipants. These findings confirm previous suggestions that formal cessation programs attract those with a more extensive history of addiction, prior failure, and pathophysiologic effects and may provide clues to increasing motivation among smokers with a greater likelihood of treatment success.

Intrinsic and extrinsic motivation for smoking cessation

An intrinsic-extrinsic model of motivation for smoking cessation was evaluated with 2 samples (ns = 1.217 and 151) of smokers who requested self-help materials for smoking cessation. Exploratory and confirmatory principal components analysis on a 36-item Reasons for Quitting (RFQ) scale supported the intrinsic-extrinsic motivation distinction. A 4-factor model, with 2 intrinsic dimensions (concerns about health and desire for self-control) and 2 extrinsic dimensions (immediate reinforcement and social influence), was defined by 20 of the 36 RFQ items. The 20-item measure demonstrated moderate to high levels of internal consistency and convergent and discriminant validity. Logistic regression analyses indicated that smokers with higher levels of intrinsic relative to extrinsic motivation were more likely to achieve abstinence from smoking.

Intrinsic and extrinsic motivation for smoking cessation

An intrinsic-extrinsic model of motivation for smoking cessation was evaluated with 2 samples (ns = 1.217 and 151) of smokers who requested self-help materials for smoking cessation. Exploratory and confirmatory principal components analysis on a 36-item Reasons for Quitting (RFQ) scale supported the intrinsic-extrinsic motivation distinction. A 4-factor model, with 2 intrinsic dimensions (concerns about health and desire for self-control) and 2 extrinsic dimensions (immediate reinforcement and social influence), was defined by 20 of the 36 RFQ items. The 20-item measure demonstrated moderate to high levels of internal consistency and convergent and discriminant validity. Logistic regression analyses indicated that smokers with higher levels of intrinsic relative to extrinsic motivation were more likely to achieve abstinence from smoking.

Effectiveness of smoking cessation interventions integrated into primary care practice

Using a complete factorial design, we tested three interventions for smoking cessation in routine primary care practice. The interventions tested were 1) physician counseling, 2) mailed letters and educational materials designed by the National Cancer Institute (NCI), and 3) referral to smoking cessation classes. Thirty-seven family practice physicians at three of Group Health's outpatient facilities participated. Patient participation rates were 95%, and follow-up was complete for 92% of those participating. None of the interventions had any effect on point prevalence of quitting as determined 8-9 months later by self-report. However, the combination of physician counseling and NCI materials doubled the odds of occurrence of significant antismoking behavior (quit, quit and relapse, or cut down) during the ensuing 8-9 months in those individuals receiving that combination. Referral to smoking cessation classes was strikingly ineffective in this setting. Of 369 individuals designated by study design for referral, only 14% even investigated the classes. This compares with a 10% self-referral rate for those persons not designated for referral by our study design. Our results and other recent work suggest that more intensive interventions on multiple occasions based on relapse prevention strategies hold promise for future success in smoking cessation efforts in primary care.

Smokers and drinkers in a health maintenance organization population: lifestyles and health status

This study examines, among a large health maintenance organization population, the prevalence of two high-risk lifestyle practices (smoking and problem drinking), their interrelationships, and their relationships with other lifestyle practices, sociodemographic characteristics, and health status measures. Results, based on a random sample of 1,133 adults, showed that smoking and problem drinking are strongly correlated. Individuals with no drinking problems had an age-, sex-, and education-adjusted smoking prevalence of approximately 20%, while problem drinkers smoked at about twice that rate. In addition, reporting one type of problem drinking behavior (binge, chronic, or drinking and driving) at least doubled, and in one instance increased by sixfold, the likelihood of reporting another type of problem drinking behavior. Smokers and problem drinkers were more likely to be younger than age 65, to be irregular seat belt users (smokers and binge drinkers only), and not to belong to voluntary organizations. Results of the analysis suggest that detection, prevention, and treatment of drug use, in general, might prove more beneficial than only focusing on smoking and problem drinking. In addition, because binge drinking and drinking and driving were so widespread among younger age groups, it might prove more beneficial to consider preventive strategies that change the sale and distribution of alcohol and make the environment safer in which to drink, such as providing transportation to get drinkers back home.

Influence of light and temperature on monoterpene emission rates from slash pine

There is a growing awareness of vegetation's role as a source of potentially reactive hydrocarbons that may serve as photochemical oxidant precursors. This study assessed the influence of light and temperature, independently, on monoterpene emissions from slash pine (Pinus elliottii Engelm.). Plants were preconditioned in a growth chamber, then transferred to an environmentally controlled gas exchange chamber. Samples of the chamber atmosphere were collected; the monoterpenes were concentrated cryogenically and measured by gas chromatography. Five monoterpenes (alpha-pinene, beta-pinene, myrcene, limonene, and beta-phellandrene) were present in the vapor phase surrounding the plants in sufficient quantity for reliable measurement. Light did not directly influence monoterpene emission rates since the emissions were similar in both the dark and at various light intensities. Monoterpene emission rates increased exponentially with temperature (i. e. emissions depend on temperature in a log-linear manner). The summed emissions of the five monoterpenes ranged from 3 to 21 micrograms C per gram dry weight per hour as temperature was increased from 20 to 46 C. Initially, emission rates from heat-stressed needles were similar to healthy needles, but rates decreased 11% per day. Daily carbon loss through monoterpene emissions accounted for approximately 0.4% of the carbon fixed during photosynthesis.