Table 4 MA use behaviours among MA users
Variable | Total (N=398) | Male (N=288) | Female (N=110) | t | X2 | P value |
|---|---|---|---|---|---|---|
Using MA only, n (%) | 381 (95.7) | 273 (94.8) | 108 (98.2) | Â | Â | >0.05 |
Onset age of MA use, M (SD), range | 29.4 (9.1), 16-62 | 31.3 (9.3), 16-67 | 24.3 (6.2), 17-44 | 7.367 | Â | <0.05 |
 <20 years old | 42 (10.6) | 13 (4.5) | 29 (26.4) |  |  |  |
 20~29 years old | 174 (43.5) | 116 (40.3) | 58 (52.7) |  | 62.170 | <0.05 |
 30~39 years old | 120 (29.9) | 100 (34.7) | 20 (18.2) |  |  |  |
 ≥40 years old | 62 (16.1) | 59 (20.5) | 3 (2.7) |  |  |  |
Years of MA use, M (SD), range | 2.8 (1.1), 1-8 | 2.9 (1.2), 1-8 | 2.6 (0.9), 1-5 | 2.650 | Â | <0.05 |
 1 year | 42 (10.6) | 34 (11.8) | 8 (7.3) |  |  |  |
 2 years | 127 (31.9) | 75 (26.0) | 52 (47.3) |  |  |  |
 3 years | 128 (32.2) | 96 (33.3) | 32 (29.1) |  | 19.411 | <0.05 |
 4 years | 71 (17.8) | 56 (19.4) | 15 (13.6) |  |  |  |
 ≥5 years | 30 (7.5) | 27 (9.4) | 3 (2.7) |  |  |  |
Times of MA use per week, M (SD), range | 2.8 (1.4), 1-7 | 2.4 (1.0), 1-6 | 3.6 (1.9), 1-7 | 8.270 | Â | <0.05 |
 1 time | 44 (11.1) | 33 (11.5) | 11 (10.0) |  |  |  |
 2 times | 183 (46.0) | 150 (52.1) | 33 (30.0) |  |  |  |
 3 times | 74 (18.6) | 62 (21.5) | 12 (10.9) |  | 89.468 | <0.05 |
 4 times | 53 (13.3) | 37 (12.8) | 16 (14.5) |  |  |  |
 ≥5 times | 44 (11.1) | 6 (2.1) | 38 (34.5) |  |  |  |
Number of persons using MA together (SD), range | 4.1 (1.6), 2-10 | 4.2 (1.4), 2-10 | 3.8 (1.9), 2-10 | 2.409 | Â | <0.05 |
Always using MA with heterosexual partners, n (%) | 335 (84.2) | 225 (78.1) | 110 (100) | Â | 28.588 | <0.05 |