Control Group (n = 81) | AUDs Group (n = 81) | |||
---|---|---|---|---|
M(SD) or % | M(SD) or % | U/χ2 | p-value | |
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 | 0.00 | 1.000 |
%Female | 58 | 58 | ||
% Afrikaans-speaking | 69 | 69 | 0.00 | 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 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 per month 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 |
Other Substance Use | ||||
% Never used cannabis | 89 | 42 | 34.35 | < 0.001 |
Lifetime cannabis dose j | 0.12 (0.37) | 4.08 (7.40) | -6.33 | < 0.001 |
% Never used methamphetamine | 100 | 96 | 0.245 | |
Lifetime methamphetamine dose k | 0 | 1.0 (0.56) | ||
% Never used any other drugs | 100 | 100 |