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. 2018 Dec 20;18:1396. doi: 10.1186/s12889-018-6263-2

Table 2.

Differences in risk and protective factor measures by AUDIT categories and illicit drug use

Hazardous Drinkers
N = 434
Lower-risk Drinkers
N = 382
Non-drinkers
N = 1111
p-value* Illicit drug use
N = 324
No illicit drug use
N = 1561
p-value*
Mean (SD) or N (%) Mean (SD) or N (%) Mean (SD) or N (%) Mean (SD) or N (%) Mean (SD) or N (%) Mean (SD) or N (%)
Models Risk
 Sibling drinks alcohol 906 (47.4%) 259 (60.3%) 183 (48.3%) 463 (42.1%) < 0.001 182 (57.1%) 709 (45.7%) < 0.001
 Problem drinker at home 680 (36.2%) 199 (47.3%) 141 (37.9%) 339 (31.3%) <.0.001 154 (49.4%) 516 (33.8%) < 0.001
 Peer models risk (2 items) 0 (0.73) 0.43 (0.80) −0.01 (0.72) −0.16 (0.64) < 0.001 0.35 (0.87) −0.07 (0.68) < 0.001
Vulnerability Risks
 Individual vulnerability risk (8 items) −0.01 (0.58) 0.28 (0.67) 0.01 (0.54) −0.13 (0.52) < 0.001 0.36 (0.66) −0.08 (0.53) < 0.001
 Social vulnerability risk (3 items) 0 (0.77) 0.33 (0.76) 0.03 (0.75) −0.14 (0.74) < 0.001 0.38 (0.78) −0.07 (0.75) < 0.001
 Suicidal ideation (SI) in past year 381 (20.1%) 152 (36.3%) 75 (20.1%) 154 (14.0%) < 0.001 118 (38.7%) 252 (16.3%) < 0.001
Opportunity risk (4 items) 0 (0.72) 0.67 (0.93) −0.02 (0.68) −0.26(0.41) < 0.001 0.67 (0.99) −0.14 (0.55) < 0.001
Alcohol availability at home 0 (1) 0.45 (1.39) 0.06 (1.11) −0.20 (0.65) < 0.001 0.49 (1.44) −0.10 (0.84) < 0.001
Alcohol availability at social gatherings (3 items) 0 (0.81) 0.88 (1.07) −0.10 (0.58) −0.31 (0.41) < 0.001 0.85 (1.10) −0.18 (0.60) < 0.001
Support protection (6 items) 0 (0.55) −0.09 (0.56) −0.03 (0.55) 0.05 (0.54) −0.15 (0.58) 0.03 (0.54) < 0.001
Parental support (4 items) 0 (0.68) −0.19 (0.69) −0.09 (0.67) 0.10 (0.65) < 0.001 −0.24 (0.68) 0.05 (0.66) < 0.001
Controls protection
Individual controls protection (3 items) 0 (0.77) −0.32 (0.96) − 0.03 (0.75) 0.13 (0.65) < 0.001 − 0.42 (0.94) 0.09 (0.68) < 0.001
Social control protection (9 items) 0 (0.57) −0.37 (0.60) −0.04 (0.55) 0.16 (0.49) < 0.001 −0.47 (0.59) 0.10 (0.51) < 0.001
Models protection (4 items) 0 (0.62) −0.19 (0.65) −0.04 (0.60) 0.09 (0.59) < 0.001 −0.22 (0.64) 0.04 (0.60) < 0.001

Hazard drinking = AUDIT score “5+”, Low Risk Drinking is AUDIT scores “1,2,3,4”; Non-drinkers is AUDIT score “0”

*Significance of differences between group analyzed using univariate ordinal multinomial cumulative logit analysis using GEE methods to adjusted for clustering by school

**Significance of differences between group analyzed using univariate binomial logit analysis using GEE methods to adjusted for clustering by school

Risk Factor Measures: standardize scores where the mean = 0 and standard deviation =1, higher scores are worse. Protective Factor Measure: standardize scale where mean = 0, standard deviation = 1, higher scores are better