You've got mail: comparing individuals who do and do not provide DNA saliva samples by mail in a study of severe alcohol use disorder.

IF 2.2 4区 医学 Q3 SUBSTANCE ABUSE
Michelle Eglovitch, Alexis Edwards, Kathryn Polak, Steven J Ondersma, Kenneth Kendler, Dace Svikis
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Abstract

Objective: Many genetic studies of psychiatric disorders rely on participants to mail in DNA samples. Differences in who returns a sample may affect the generalizability of these studies, but little attention has focused on possible differences between participants who do and do not provide samples. The present study compared participants with severe lifetime alcohol use disorder (AUD) who did and did not return saliva DNA samples.

Methods: N = 3927 individuals were recruited through Facebook for a genome-wide association study of severe AUD. Participants completed an online survey and agreed to provide a saliva DNA sample by mail. Survey measures included: demographics, quantity and frequency of recent alcohol and tobacco use, impulsivity, and personality. Participants who returned the saliva kit (n = 2412) were compared to those who did not provide DNA samples (n = 1515) were compared using univariate Chi-square and t-tests.

Results: The sample was predominantly White (88.3%) and female (64.0%). DNA providers were more likely than non-providers to report graduate-level education. DNA providers were also less likely to report recent cigarette smoking and scored higher on measures of conscientiousness, perseverance, and premeditation. Using multivariate regression, the most parsimonious model found that being male, a non-smoker, and endorsing perseverance was associated with providing DNA.

Conclusions: In an online sample of individuals with severe AUD, participants who did not provide DNA samples showed multiple demographic and psychosocial differences from those who did provide samples. These findings may have implications for generalizability and suggest that further research is needed.

你收到了邮件:在一项关于严重酒精使用障碍的研究中,比较那些通过邮件提供DNA唾液样本和不提供DNA唾液样本的人。
目的:许多精神疾病的遗传研究依赖于参与者邮寄DNA样本。谁提供样本的差异可能会影响这些研究的普遍性,但很少有人关注提供样本和不提供样本的参与者之间可能存在的差异。目前的研究比较了患有严重终身酒精使用障碍(AUD)的参与者,他们提供和不提供唾液DNA样本。方法:通过Facebook招募N = 3927名个体,进行重度AUD的全基因组关联研究。参与者完成了一项在线调查,并同意通过邮件提供唾液DNA样本。调查措施包括:人口统计,最近饮酒和吸烟的数量和频率,冲动和个性。将返回唾液试剂盒的参与者(n = 2412)与未提供DNA样本的参与者(n = 1515)进行比较,使用单变量卡方检验和t检验。结果:样本以白人(88.3%)和女性(64.0%)为主。DNA提供者比非提供者更有可能报告研究生水平的教育。DNA提供者也不太可能报告最近吸烟,并且在责任心、毅力和预谋方面得分更高。通过多元回归,最简约的模型发现,男性、不吸烟和坚持不懈与提供DNA有关。结论:在严重AUD患者的在线样本中,未提供DNA样本的参与者与提供样本的参与者表现出多种人口统计学和社会心理差异。这些发现可能具有普遍性,并表明需要进一步的研究。
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来源期刊
Alcohol and alcoholism
Alcohol and alcoholism 医学-药物滥用
CiteScore
4.70
自引率
3.60%
发文量
62
审稿时长
4-8 weeks
期刊介绍: About the Journal Alcohol and Alcoholism publishes papers on the biomedical, psychological, and sociological aspects of alcoholism and alcohol research, provided that they make a new and significant contribution to knowledge in the field. Papers include new results obtained experimentally, descriptions of new experimental (including clinical) methods of importance to the field of alcohol research and treatment, or new interpretations of existing results. Theoretical contributions are considered equally with papers dealing with experimental work provided that such theoretical contributions are not of a largely speculative or philosophical nature.
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