Transitions in alcohol use over time: a survival analysis

BMC Psychology

Table 1 Descriptive statistics (sample size, mean, standard deviation, minimum, and maximum) for age-at-event and years-between-event variables

Variable	N	Mean	SD	Min	Max
Age first drink	1738	16.3	2.9	1	42
Age of first HD	1295	21.1	5.8	12	55
Age of first remission from HD	932	32.0	8.9	17	56
Age of first relapse back to HD	157	37.5	8.2	20	54
Years between first drinking and HD	1293	5.3	5.6	0	38
Years between HD and remission	932	11.5	8.5	0	37
Years between remission and relapse back to HD	157	9.3	6.5	0	31
Age of first AD	641	24.6	7.9	12	54
Age of first remission	524	34.9	9.0	15	56
Age of first relapse	68	37.1	8.5	17	52
Years between first drinking and first AD	640	9.1	7.7	0	46
Years between first AD and first remission	524	11.2	8.1	0	36
Years between first remission and relapse	68	9.1	6.4	0	27

Min minimum, Max maximum; together these two values create the range. HD heavy drinking, quantified as QFI (quantity times frequency of drinking) greater than or equal to 60 drinks a month. AD alcohol dependence. One individual reported that the age of their first drink was at 1-year old, with others reporting other very young ages; missing data on other variables removed most of these participants from subsequent analyses, and age of first drink is not relevant for later transitions for those who do have later HD or AD data

ISSN: 2050-7283