Under-estimation of Alcohol Consumption among Women At-risk for Drinking during Pregnancy

Randomized Trial of an Innovative Electronic Screening and Brief Intervention for Reducing Drinking Among Women of Childbearing Age

OBJECTIVES

To evaluate the efficacy of an innovative, self-administered, electronic Screening and Brief Intervention (e-SBI) in English and Spanish, "DrinkWise," for reducing drinking among nonpregnant women of childbearing age.

METHODS

A parallel design, phase 1 trial included 185 nonpregnant women reporting risky drinking (8 or more drinks in a week or 3 or more drinks in a day) who were recruited from 2 publicly funded Nutritional Assistance for Women, Infants and Children (WIC) program sites in the United States from 2016 to 2017. Participants were 18 to 44 years in age, 75% of Hispanic ethnicity, 44% Spanish speakers, 30% had not completed high school, and 15% were currently breastfeeding. Participants were randomized to receive (intervention condition, n = 99) or not receive (control condition, no intervention, n = 86) DrinkWise and followed at 3 and 6 months.

RESULTS

Women receiving DrinkWise had greater reductions in the odds of self-reported weekly alcohol use (odds ratio [OR] = 0.22, SE = 0.12, P < 0.01) and heavy alcohol use (OR = 0.23, SE = 0.14, P < 0.05) at 6-month follow-up than controls, with no group differences at 3-month follow-up. Compared with heavy drinking controls, heavy drinkers receiving DrinkWise showed a trend (P = 0.06) for greater reductions in drink (pour) size from 3- to 6-month follow-up.

CONCLUSIONS

DrinkWise may be efficacious in reducing drinking among low-income women of childbearing age and provides a low-cost tool for increasing access to recommended SBI among childbearing-age women. Studies should continue to build DrinkWise's evidence base.

TRIAL REGISTRATION

ClinicalTrials.gov, https://clinicaltrials.gov/ct2/show/NCT02337361.

Adjustments for drink size and ethanol content: new results from a self-report diary and transdermal sensor validation study

BACKGROUND

Prior studies adjusting self-reported measures of alcohol intake for drink size and ethanol (EtOH) content have relied on single-point assessments.

METHODS

A prospective 28-day diary study investigated magnitudes of drink-EtOH adjustments and factors associated with these adjustments. Transdermal alcohol sensor (TAS) readings and prediction of alcohol-related problems by number of drinks versus EtOH-adjusted intake were used to validate drink-EtOH adjustments. Self-completed event diaries listed up to 4 beverage types and 4 drinking events/d. Eligible volunteers had ≥ weekly drinking and ≥3+ drinks per occasion with ≥26 reported days and pre- and postsummary measures (n = 220). Event reports included drink types, sizes, brands or spirits contents, venues, drinks consumed, and drinking duration.

RESULTS

Wine drinks averaged 1.19, beer 1.09, and spirits 1.54 U.S. standard drinks (14 g EtOH). Mean-adjusted alcohol intake was 22% larger using drink size and strength (brand/EtOH concentration) data. Adjusted drink levels were larger than "raw" drinks in all quantity ranges. Individual-level drink-EtOH adjustment ratios (EtOH adjusted/unadjusted amounts) averaged across all days drinking ranged from 0.73 to 3.33 (mean 1.22). Adjustment ratio was only marginally (and not significantly) positively related to usual quantity, frequency, and heavy drinking (all ps < 0.10), independent of gender, age, employment, and education, but those with lower incomes (both p < 0.01) drank stronger/bigger drinks. Controlling for raw number of drinks and other covariates, degree of adjustment independently predicted alcohol dependence symptoms (p < 0.01) and number of consequences (p < 0.05). In 30 respondents with sufficiently high-quality TAS readings, higher correlations (p = 0.04) were found between the adjusted versus the raw drinks/event and TAS areas under the curve.

CONCLUSIONS

Absent drink size and strength data, intake assessments are downward biased by at least 20%. Between-subject variation in typical drink content and pour sizes should be addressed in treatment and epidemiological research.

Feasibility and acceptability of a novel, computerized screening and brief intervention (SBI) for alcohol and sweetened beverage use in pregnancy

BACKGROUND

Recommended screening and brief intervention (SBI) for alcohol use during pregnancy is impeded by high patient loads and limited resources in public health settings. We evaluated the feasibility, acceptability and validity of a new self-administered, single-session, bilingual, computerized Screening and Brief Intervention (SBI) program for alcohol and sugar sweetened beverage (SSB) use in pregnancy.

METHODS

We developed and tested the computerized SBI program at a public health clinic with 290 pregnant women. Feasibility, acceptability, and validity measures were included in the program which had several modules, including those on demographics, health and beverage use. Time to complete the program and user experience items were used to determine program feasibility and acceptability. Validity analyses compared proportions of prenatal alcohol use identified by the program versus in-person screening by clinic staff.

RESULTS

Most program users (87%, n = 251) completed the entire program; 91% (n = 263) completed the key screening and brief intervention modules. Most users also completed the program in ten to fifteen minutes. Program users reported that the program was easy to use (97%), they learned something new (88%), and that they would share what they learned with others (83%) and with their doctors or clinic staff (76%). Program acceptability did not differ by age, education, or type of beverage intervention received. The program identified alcohol use in pregnancy among 21% of users, a higher rate than the 13% (p < .01) found via screening by clinic staff.

CONCLUSIONS

Computerized Screening and Brief Intervention for alcohol and SSB use in public health clinics is feasible and acceptable to English and Spanish speaking pregnant women and can efficiently identify prenatal alcohol use.

Hispanic Americans Baseline Alcohol Survey (HABLAS): effects of container size adjustments on estimates of alcohol consumption across Hispanic national groups

OBJECTIVE

This study was conducted to examine discrepancies in alcohol consumption estimates between a self-reported standard quantity-frequency measure and an adjusted version based on respondents' typically used container size.

METHOD

Using a multistage cluster sample design, 5,224 Hispanic individuals 18 years of age and older were selected from the household population in five metropolitan areas of the United States: Miami, New York, Philadelphia, Houston, and Los Angeles. The survey-weighted response rate was 76%. Personal interviews lasting an average of 1 hour were conducted in respondents' homes in either English or Spanish.

RESULTS

The overall effect of container adjustment was to increase estimates of ethanol consumption by 68% for women (range across Hispanic groups: 17%-99%) and 30% for men (range: 14%-42%). With the exception of female Cuban American, Mexican American, and South/Central American beer drinkers and male Cuban American wine drinkers, all percentage differences between unadjusted and container-adjusted estimates were positive. Second, container adjustments produced the largest change for volume of distilled spirits, followed by wine and beer. Container size adjustments generally produced larger percentage increases in consumption estimates for the higher volume drinkers, especially the upper tertile of female drinkers.

CONCLUSIONS

Self-reported alcohol consumption based on standard drinks underreports consumption when compared with reports based on the amount of alcohol poured into commonly used containers.

Conceiving risk, divergent responses: perspectives on the construction of risk of FASD in six countries

Conceptualizations of risks related to women's alcohol use during pregnancy, and the attendant response to preventing fetal alcohol spectrum disorder (FASD), are examined in six countries: the United States, Canada, the United Kingdom, Uganda, Uruguay, and China. Considerable differences were found in how risks were conceptualized across countries and in contextual factors that influence research, prevention, and intervention efforts. Differences in conceptualizations were also apparent within countries. Differences also existed in the degree to which the issue of drinking during pregnancy has been minimized or amplified and in whether and how responses are linked to treatment or other public health interventions.

Under-estimation of Alcohol Consumption among Women At-risk for Drinking during Pregnancy

This study adds to a growing literature showing that definitions for "standard drinks" are often difficult to conceptualize and that people often underestimate their actual drink sizes. As part of an intervention aimed at reducing negative neonatal and maternal outcomes, insured at-risk women were asked to identify the vessels from which they drank each of 6 beverages (n=266). We calculated differences between their actual and standard drink sizes. Additionally, differences were compared to those reported in an earlier study of uninsured inner city minority women that used identical vessels methodology. Over half of the spirits, fortified wine and malt liquor drinkers underestimated the actual number of ounces their drinks contained. Most spirits drinkers (90%) and approximately three-quarters of the wine and malt liquor drinkers drank larger-than-standard drink sizes, with the median drink size 1.5 to 2.0 times larger than the standard size for those beverages. Heavier drinkers (>/=3 drinks per sitting) were more likely than lighter drinkers to underestimate their drink sizes. Findings were similar to those in the previous study using identical drink size measurements. Accurately assessing true drink sizes is underscored when the social, health and epidemiologic consequences associated with miscalculation are considered.