Baseline characteristics – all cases (n=207)
| Parameters* | Usual care (n=104) | Brief intervention (n=103) | Total (n=207) |
|---|---|---|---|
| Sociodemographic characteristics | |||
| Age (years) | 24.3±7.6 (22, 19–27) | 25.7±8.0 (23, 20–28) | 25.0±7.8 (22, 20–28) |
| Gender | |||
| Female | 74 (71.8) | 62 (60.2) | 136 (66.0) |
| Male | 29 (28.2) | 41 (39.8) | 70 (34.0) |
| Ethnicity | |||
| White | 101 (97.1) | 95 (92.2) | 196 (94.7) |
| Other | 3 (2.9) | 8 (7.8) | 11 (5.3) |
| Marital status | |||
| Single | 97 (93.3) | 89 (86.4) | 186 (89.9) |
| Married | 2 (1.9) | 3 (2.9) | 5 (2.4) |
| Other | 5 (4.8) | 11 (10.7) | 16 (7.7) |
| Employment status | |||
| Full-time | 47 (45.20) | 53 (51.5) | 100 (48.3) |
| Part-time | 15 (14.42) | 17 (16.5) | 32 (15.5) |
| Unemployed | 7 (6.73) | 6 (5.8) | 13 (6.3) |
| Student | 33 (31.73) | 22 (21.4) | 55 (26.6) |
| Other | 2 (1.92) | 5 (4.8) | 7 (3.3) |
| Education completed at what age? | |||
| Not yet finished | 27 (25.9) | 16 (15.5) | 43 (20.8) |
| ≤16 years | 24 (23.0) | 25 (24.3) | 49 (23.7) |
| 17+ years | 53 (51.1) | 62 (60.2) | 115 (55.5) |
| Smoking (self-description) | |||
| Never smoked | 35 (33.7) | 37 (36.6) | 72 (35.1) |
| Ex-smoker | 9 (8.7) | 18 (17.8) | 27 (13.2) |
| Smoking occasionally | 28 (26.9) | 19 (18.8) | 47 (22.9) |
| Regular smoking | 32 (30.7) | 27 (26.8) | 59 (28.8) |
| Reason for first attendance (GUM) | |||
| Asymptomatic screen | 50 (50.0) | 45 (44.6) | 95 (47.3) |
| Symptoms | 46 (46.0) | 50 (49.5) | 96 (47.7) |
| Contact of STI | 4 (4.0) | 5 (5.0) | 9 (4.5) |
| Other | 0 (0.0) | 1 (0.9) | 1 (0.5) |
| Alcohol drinking behaviour | |||
| How often having an alcohol drink? | |||
| ≤Monthly | 5 (4.9) | 7 (6.8) | 12 (5.8) |
| 2–4 Times monthly | 42 (40.8) | 36 (34.9) | 78 (37.9) |
| 2+ Weekly | 56 (54.3) | 60 (58.3) | 116 (56.3) |
| How many units on a typical day? | |||
| 1–2 | 14 (13.6) | 12 (11.7) | 26 (12.6) |
| 3–6 | 58 (56.3) | 51 (49.5) | 109 (52.9) |
| 7+ | 31 (30.1) | 40 (38.8) | 71 (34.5) |
| How often having 6+ or 8+ units on a single occasion? | |||
| Never | 1 (1.0) | 0 (0.0) | 1 (0.5) |
| ≤Monthly | 61 (59.2) | 59 (57.3) | 120 (58.3) |
| Weekly, almost daily or daily | 41 (39.8) | 44 (42.7) | 85 (41.2) |
| AUDIT score | 10.19±3.9 (10, 7–13) | 9.95±3.3 (10, 7–12) | 10.1±3.6 (10, 7–12) |
| Total weekly alcohol units consumed? | 24.95±26.0 (17, 6–36) | 22.14±18.8 (19, 9–30) | 23.54±22.7 (18, 8–31) |
| Hazardous or harmful drinking† | |||
| Yes | 55 (54.5) | 60 (58.3) | 115 (56.4) |
| No | 46 (45.5) | 43 (41.7) | 89 (43.6) |
| Total units on the heaviest day | 12.5±11.3 (10, 5–16) | 12.1±8.7 (10, 6–16) | 12.3±10.0 (10, 6–16) |
| Drink with an intention of getting drunk? | |||
| ≤Monthly | 8 (21.6) | 5 (14.3) | 13 (18.1) |
| 2–4 Times monthly | 7 (18.9) | 8 (22.8) | 15 (20.8) |
| 2+ Weekly | 17 (46.0) | 17 (48.6) | 34 (47.2) |
| 4+ Weekly | 5 (13.5) | 5 (14.3) | 10 (13.9) |
| Advice on alcohol use | |||
| Yes | 68 (65.4) | 66 (64.1) | 134 (64.7) |
| No | 36 (34.6) | 37 (35.9) | 73 (35.3) |
| Sexual behaviour in last 4 weeks | |||
| How many occasions of sex? | 7.0±8.5 (4, 1–10) | 5.6±7.7 (2, 1–10) | 6.3±8.1 (3, 1–10) |
| How many partners? | 1.3±0.9 (1, 1–2) | 1.3±1.3 (1, 1–1) | 1.3±1.1 (1, 1–2) |
| How many were completely new partners? | 0.7±1.0 (0, 0–1) | 0.7±1.0 (0, 0–1) | 0.7±1.0 (0, 0–1) |
| Condom use with new partners | |||
| Yes | 14 (40.0) | 9 (27.3) | 23 (33.8) |
| No | 7 (20.0) | 9 (27.3) | 16 (23.5) |
| Not stated | 14 (40.0) | 15 (45.6) | 29 (42.7) |
| Drunk and sex that was regretted the next day | |||
| Yes | 12 (13.3) | 8 (8.6) | 20 (10.9) |
| No | 78 (86.7) | 85 (91.4) | 163 (89.1) |
*Continuous variables are presented by mean±SD (median, IQR); categorical variables are presented by frequency and percentage in parentheses [n (%)].
†>14 units/week in women; >21 units/week in men.
AUDIT, Alcohol Use Disorders Identification Test; GUM, genitourinary medicine; IQR, interquartile range; STI, sexually transmitted infection.