Internationally, laws on the provision of alcohol commonly exempt that provided by parents and/or consumed in private premises. Whether these exemptions mitigate alcohol-related harms, as has been posited, is unclear. We used data from 10,968 individuals (5216 women) from the 1970 British Birth Cohort Study. Exposures, self-reported at 16-years of age, were consumption of alcohol with specific people (including parents, siblings and friends) and acquisition from different places (including their own home). The outcome, self-reported at 30-years of age, were high alcohol consumption (>14 units of alcohol in the last week), and screening positive for a possible alcohol problem using the cutting down, being annoyed by criticism, feeling guilty, and eye-openers (CAGE) questionnaire. At 30-years of age, 32.1% of study members consumed >14 units in the last week and 14.3% screened positive on the CAGE questionnaire. Neither consuming alcohol with parents nor the acquisition of alcohol from home was associated with later high consumption or alcohol problems. There was a suggestion, however, that drinking with other teenagers was related to an increased risk of both outcomes (consumption: 1.32 (1.16, 1.51); alcohol problems: 1.27 (1.01, 1.58), as was acquisition from an off-license (consumption: 1.23 (0.99, 1.51); alcohol problems: 1.49 (1.17, 1.90). This study strengthens the evidence that alcohol consumption with parents, or acquisition from home, does not protect against later alcohol-related harms.
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I also argued investigators must have access to the RAW (eg STDM) dataset rather than the derived (eg ADAM dataset) to assure that the data was both derived AND analyzed correctly— C. Michael Gibson MD (@CMichaelGibson) December 9, 2019