Drinking pattern is more strongly associated with under-reporting of alcohol consumption than socio-demographic factors: evidence from a mixed-methods study

BMC Public Health

Nicola Shelton¹  James Kneale²  Sadie Boniface³ 

[1]Department of Epidemiology & Public Health, London, UK

[2]UCL Geography, London, UK

[3]Research Associate, HSSRG, UCL Department of Epidemiology & Public Health, 1-19 Torrington Place, London WC1E 6BT, UK

关键词: Mixed methods;    Public health;    Health surveys;    Alcohol drinking;   

Others  :  1091882
DOI  :  10.1186/1471-2458-14-1297

 received in 2014-09-22, accepted in 2014-12-09,  发布年份 2014

【 摘 要 】

Background

Under-reporting of alcohol consumption is widespread; surveys typically capture 40-60% of alcohol sales. However the population distribution of under-reporting is not well understood.

Methods

Mixed-methods study to identify factors associated with under-reporting, using the nationally-representative Health Survey for England (HSE) 2011 (overall response rate 66%). Comparison of retrospective computer-assisted personal interview and seven-day drinking diary (n = 3,774 adults 18+, 50% women, diary response rate 69%) to identify factors associated with diary responses exceeding those of the interview using multivariable linear regression for three outcomes: drinking days in the week recorded, volume consumed on heaviest drinking day in the week recorded, and weekly alcohol consumption. Qualitative semi-structured interviews (n = 10) explored reasons for under-reporting in further detail.

Results

Number of drinking days was slightly greater in the diary than the interview (P < 0.001). Reported consumption was higher in the diary than in the interview for heaviest drinking day in the week recorded (0.7 units greater among men, 1.2 units among women, P < 0.001), and weekly alcohol consumption in women only (1.1 units among women, P = 0.003). Participants who drank more frequently, more heavily, and had a more varied drinking pattern with respect to the types of drink consumed or choice of drinking venues had a larger difference between their diary week and their interview week.

The qualitative interviews identified having a non-routine drinking pattern, self-perception as a non-frequent drinker, and usually tracking drinking using experiential approaches as linked to more drinking being reported in the diary than the retrospective interview.

Conclusions

Heavy drinking and non-routine drinking patterns may be associated with greater under-reporting of alcohol consumption. Estimates of drinking above recommended levels are likely to be disproportionately under-estimated.

【 授权许可】

   
2014 Boniface et al.; licensee BioMed Central.

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