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) >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 <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 <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 <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 <0.05
Always using MA with heterosexual partners, n (%) 335 (84.2) 225 (78.1) 110 (100) 28.588 <0.05

Liu et al.

Liu et al. BMC Public Health 2013 13:30   doi:10.1186/1471-2458-13-30

Open Data