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. Author manuscript; available in PMC: 2021 Apr 8.
Published in final edited form as: Subst Use Misuse. 2020 Apr 8;55(8):1237–1245. doi: 10.1080/10826084.2020.1732422

Table 2.

Descriptive statistics by assessment wave*

Variable Baseline N=455 6-month follow-up N=377 12-month follow-up N=327 18-month follow-up N=292 24-month follow-up N=297
Mean (SD) % Mean (SD) % Mean (SD) % Mean (SD) % Mean (SD) %
Alcohol use 4.44 (5.19) 20 3.46 (4.62) 17 3.92 (5.05) 21 3.38 (4.50) 17 3.34 (4.51) 20
Depressive symptoms 21.32 (10.51)a 44 20.88 (9.63) 45 19.11 (8.91) 35 17.18 (8.23) 28 15.88 (7.39) 22
Perceived social support 274.67 (83.31) -- 278.34 (82.83) -- 277.96 (82.54) -- 268.00 (80.93) -- 273.78 (85.33) --
*

Mean scores were calculated prior to conducting multiple imputation and to centering the variables. Percentages were calculated as the proportion of the participants reporting severe depressive symptoms (CES-D ≥ 23) or harmful alcohol use (AUDIT ≥ 8) at each assessment.

a

Missing data: 1 participant missing data for CES-D at baseline

Note: SD=standard deviation; CES-D=Center for Epidemiologic Studies Depressive symptoms Scale; AUDIT=Alcohol Use Disorders Identification Test