Table 1 Sociodemographic and clinical characteristics of the sample (N = 397)
Categorical variables | n | % | ||||||
|---|---|---|---|---|---|---|---|---|
Age group | ||||||||
 21–34 | 198 | 49.87% | ||||||
 35–49 | 146 | 36.78% | ||||||
 50–64 | 53 | 13.35% | ||||||
Gender | ||||||||
 Male | 201 | 50.63% | ||||||
 Female | 196 | 49.37% | ||||||
Ethnicity | ||||||||
 Chinese | 297 | 74.81% | ||||||
 Malay | 51 | 12.85% | ||||||
 Indian | 38 | 9.57% | ||||||
 Others | 11 | 2.77% | ||||||
Highest education level | ||||||||
 Primary and below | 18 | 4.53% | ||||||
 Secondary School | 120 | 30.23% | ||||||
 Pre-U/Junior College/ Vocational Institute/ITE/Diploma | 182 | 45.84% | ||||||
 Degree, professional certification, and above | 77 | 19.40% | ||||||
Marital status | ||||||||
 Single | 320 | 80.60% | ||||||
 Married | 47 | 11.84% | ||||||
 Divorcedb | 26 | 6.55% | ||||||
 Separatedb | 3 | 0.76% | ||||||
 Widowedb | 1 | 0.25% | ||||||
Monthly Personal Income (in Singapore Dollars) | ||||||||
 No income | 114 | 28.72% | ||||||
 Below 2,000 | 202 | 50.88% | ||||||
 2,000 to 3,999 | 48 | 12.09% | ||||||
 4,000 & above | 15 | 3.78% | ||||||
 Refused / Don’t Knowa | 18 | 4.53% | ||||||
Lifetime alcohol problems (CAGE) | ||||||||
 No lifetime drinking problem (< 2) | 376 | 94.71% | ||||||
 Problematic alcohol use (≥ 2) | 21 | 5.29% | ||||||
Drug use (DAST-10) | ||||||||
 No problematic drug use (< 3) | 371 | 93.45% | ||||||
 Hazardous drug use (≥ 3) | 23 | 5.79% | ||||||
 Refused/Don’t Knowa | 3 | 0.76% | ||||||
Continuous variables | n | Mean | S.D | P25 | P50 | P75 | ||
 Symptoms Checklist 90 Revised—Global Symptom Index | 368 | 0.94 | 0.87 | 0.26 | 0.67 | 1.39 | ||
 BIS – Non-planning impulsivity | 394 | 11.97 | 3.48 | 10 | 12 | 14.75 | ||
 BIS – Motor impulsiveness | 386 | 13.03 | 11.46 | 9 | 11 | 13 | ||
 BIS – Lack of self-control | 390 | 9.92 | 3.3 | 8 | 9 | 11 | ||