Table 1.
Confirmatory analyses of socio-demographic and alcohol grouping measures and substance use characteristics of the non-AUD and AUD groups.
| non-AUD(n = 81) | AUD (n = 81) | U/χ2 | p-value | |
|---|---|---|---|---|
| M (SD) or % | M (SD) or % | |||
| Socio-demographics | ||||
| Age | 14.76 (0.78) | 14.92 (0.74) | −1.19 | 0.235 |
| Education level a | 7.79 (0.85) | 7.85 (0.74) | −0.43 | 0.666 |
| % Male | 42 | 42 | <0.01 | 1.000 |
| % Female | 58 | 58 | ||
| % Afrikaans-speaking | 69 | 69 | <0.01 | 1.000 |
| % English-speaking | 31 | 31 | ||
| % Mixed ancestry | 97.6 | 97.6 | 0.497 | |
| % White | 1.2 | 0 | ||
| % Black | 1.2 | 0 | ||
| Total Socio-economic status score b | 28.19 (5.80) | 24.85 (5.93) | 1.34 | 0.179 |
| Alcohol Use | ||||
| % Never consumed alcohol | 41 | 0 | ||
| % Never intoxicated | 93 | 0 | ||
| % Light drinker (Life dose < 100 standard drinks) c | 59 | 0 | ||
| % Alcohol abuse d | 2.5 | |||
| % Alcohol dependence e | 97.5 | |||
| % Weekends-only drinking style in most recent drinking phase f | 95% | |||
| Drinking onset age (years) in participants that have drunk alcohol | 12.25 (1.66) | 12.04 (1.70) | 0.57 | 0.567 |
| Alcohol lifetime dose g | 5.77 (12.46) | 1493.69 (1511.53) | −11.04 | <0.001 |
| Age of first intoxication | 12.83 (1.15) | |||
| Age of onset of regular drinking | 12.91 (1.11) | |||
| Regular drinking duration (months) | 23.78 (15.91) | |||
| Regular drinking frequency (days/month) in most recent drinking phase | 5.01 (2.87) | |||
| Regular drinking quantity/month (standard drinks) h | 65.78 (57.96) | |||
| Tobacco Use | ||||
| % Never smoked tobacco | 59 | 17 | <0.001 | |
| % Light smokers (lifetime < 100 cigarettes) | 35 | 31 | ||
| % Regular smokers (lifetime > 100 cigarettes) | 6 | 52 | ||
| Smoking onset age (years) in light smokers | 12.53 (1.62) | 12.44 (1.96) | −0.19 | 0.846 |
| Smoking onset age (years) in regular smokers | 13 (0.71) | 12.36 (1.46) | 0.96 | 0.339 |
| Lifetime tobacco dose of all smokers i | 86.42 (442.80) | 1417.59 (2762.60) | −7.02 | <0.001 |
Abbreviation: AUD: alcohol use disorders; Notes: For all variables not presented as percentages, means are presented with standard deviations in parentheses. Continuous variables compared using the Mann Whitney U Test and categorical variables compared using the Chi-square or Fisher’s exact tests. a Years of successfully completed education; b Total Socio-economic status score: Sum of Family income (1–6), Reversed employment category of participant’s parent with the highest employment rank (Hollingshead reversed) (1–9), Parent education (0–6), Total assets (0–7), Dwelling type (1–6) and Bedroom cohabitation (1–7)—Maximum = 41; c Less than 100 standard drinks of alcohol consumed in lifetime; d Greater than 100 standard drinks of alcohol consumed in lifetime with a DSM-IV diagnosis of alcohol abuse; e Greater than 100 standard drinks of alcohol consumed in lifetime with a DSM-IV diagnosis of alcohol dependence; f Style of drinking followed in the most recent phase of drinking; g Total number of standard drinks of alcohol consumed in lifetime; h Average standard drinks of alcohol consumed per month; i Total number of cigarettes smoked in lifetime.