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Table 1 Demographic characteristics and key behaviors of MSM in Guangzhou, China, 2008–2013

From: Consistently High Unprotected Anal Intercourse (UAI) and factors correlated with UAI among men who have sex with men: implication of a serial cross-sectional study in Guangzhou, China

Characteristics 2008 2009 2010 2011 2012 2013 Total χ 2value p a
(N = 379) (N = 385) (N = 405) (N = 400) (N = 401) (N = 633) (N = 2603)
n (%) n (%) n (%) n (%) n (%) n (%) n (%)
Age (years)         22.80 0.299
  <20 14 (3.7) 10 (2.6) 13 (3.2) 15 (3.8) 9 (2.2) 15 (2.4) 76 (2.9)   
  20-29 217 (57.3) 227 (59.0) 245 (60.5) 250 (62.5) 228 (56.9) 385 (60.8) 1552 (59.6)   
  30-39 111 (29.3) 113 (29.4) 120 (29.6) 101 (25.3) 128 (31.9) 174 (27.5) 747 (28.7)   
  40-49 35 (9.2) 27 (7.0) 23 (5.7) 25 (6.3) 24 (6.0) 49 (7.7) 183 (7.0)   
  ≥50 2 (0.5) 8 (2.1) 4 (1.0) 9 (2.3) 12 (3.0) 10 (1.6) 45 (1.7)   
Marital status         40.73 <0.001
  Single 214 (54.5) 232 (60.3) 256 (63.2) 260 (65.0) 258 (64.3) 430 (67.9) 1650 (63.4)   
  Cohabiting with male partner 67 (17.7) 69 (17.9) 62 (15.3) 46 (11.5) 63 (15.7) 104 (16.4) 411 (15.8)   
  Married 79 (20.8) 69 (17.9) 74 (18.3) 89 (22.3) 69 (17.2) 76 (12.0) 456 (17.5)   
  Divorced or widowed 19 (5.0) 15 (3.9) 13 (3.2) 5 (1.3) 11 (2.7) 23 (3.6) 86 (3.3)   
Hukou (registered permanent residence)        57.46 <0.001
  Guangzhou 105 (27.7) 122 (31.7) 122 (30.1) 115 (28.8) 134 (33.4) 235 (37.1) 833 (32.0)   
  Other city in Guangdong province 85 (22.4) 84 (21.8) 90 (22.2) 67 (16.8) 94 (23.4) 186 (29.4) 606 (23.3)   
  Outside Guangdong province 189 (49.9) 179 (46.5) 193 (47.7) 218 (54.5) 173 (43.1) 212 (33.5) 1164 (44.7)   
Han nationality 362 (95.5) 369 (95.8) 382 (94.3) 381 (95.3) 389 (97.0) 614 (97.0) 2497 (95.9) 6.37 0.272
Education level         64.16 <0.001c
  Junior high school or lower 72 (19.0) 47 (12.2) 66 (16.3) 53 (13.3) 49 (12.2) 35 (5.5) 322 (12.4)   
  Senior high school 111 (29.3) 99 (25.7) 115 (28.4) 140 (35.0) 103 (25.7) 110 (17.4) 678(26.0)   
  College or higher 196 (51.7) 239 (62.1) 224 (55.3) 207 (51.8) 249 (62.1) 488 (77.1) 1603(61.6)   
Monthly income (CNY)         131.60 <0.001c
  0 49 (12.9) 54 (14.0) 46 (11.4) 39 (9.8) 56 (14.0) 84 (13.3) 328 (12.6)   
  ≤2000 125 (33.0) 88 (22.8) 99 (24.5) 65 (16.3) 27 (6.7) 47 (7.4) 451 (17.3)   
  2001-3000 85 (22.4) 95 (24.7) 94 (23.2) 112 (28.0) 78 (19.5) 98 (15.5) 562 (21.6)   
  3001-4000 60 (15.8) 60 (15.6) 69 (17.0) 86 (21.5) 72 (18.0) 112 (17.7) 459 (17.6)   
  >4000 60 (15.8) 88 (22.9) 97 (24.0) 98 (24.5) 168 (41.9) 292 (46.1) 803 (30.8)   
Self-perceived sexual orientation         26.23 0.003
  Homosexual 232 (61.2) 247 (64.2) 264 (65.2) 260 (65.0) 247 (61.6) 451 (71.2) 1701 (65.3)   
  Bisexual 106 (28.0) 109 (28.3) 117 (28.9) 120 (30.0) 119 (29.7) 148 (23.4) 719 (27.6)   
  Uncertain 41 (10.8) 29 (7.5) 24 (5.9) 20 (5.0) 35 (8.7) 34 (5.4) 183 (7.0)   
Venues for meeting partners         170.40 <0.001
  Bar, disco, tea house or club 28 (7.4) 31 (8.1) 25 (6.2) 27 (6.8) 22 (5.5) 22 (3.5) 155 (6.0)   
  Bath house, sauna or massage 25 (6.6) 15 (3.9) 14 (3.5) 9 (2.3) 6 (1.5) 8 (1.3) 77 (3.0)   
  Park, public toilet 57 (15.0) 25 (6.5) 24 (5.9) 18 (4.5) 40 (10.0) 5 (0.8) 169 (6.5)   
  Internet 247 (65.2) 273 (70.9) 298 (73.6) 309 (77.3) 282 (70.3) 564 (89.1) 1973 (75.8)   
  Other 22 (5.8) 41 (10.6) 44 (10.9) 37 (9.3) 51 (12.7) 34 (5.4) 229 (8.8)   
Age of first sex with male (years)         1.97 0.161c
  <19 66 (17.4) 88 (22.9) 63 (15.6) 62 (15.5) 70 (17.5) 118 (18.6) 467 (17.9)   
  19-24 195 (51.5) 178 (46.2) 181 (44.7) 179 (44.8) 192 (48.0) 364 (57.5) 1289 (49.5)   
  ≥25 118 (31.1) 119 (30.9) 161 (39.8) 159 (39.8) 138 (34.5) 151 (23.9) 846 (32.5)   
Number of male partners in the past 6 months        7.45 0.006c
  1 94 (28.0) 123 (35.3) 121 (33.6) 123 (33.3) 136 (37.5) 184 (32.2) 781 (33.3)   
  2 80 (23.8) 92 (26.4) 96 (26.7) 98 (26.6) 97 (26.7) 159 (27.8) 622 (26.5)   
  3 69 (20.5) 66 (19.0) 63 (17.5) 66 (17.9) 72 (19.8) 112 (19.6) 448 (19.1)   
  4-9 69 (20.5) 38 (10.9) 60 (16.7) 68 (18.4) 40 (11.1) 105 (18.4) 380 (16.2)   
  ≥10 24 (7.1) 29 (8.3) 20 (5.6) 14 (3.8) 18 (5.0) 12 (2.1) 117 (5.0)   
Had sex with female in the past six months 82 (21.6) 81 (21.0) 80 (19.8) 74 (18.5) 87 (21.7) 76 (12.0) 480 (18.4) 25.02 <0.001
UVIb 58 (15.3) 49 (12.7) 64 (15.8) 52 (13.0) 60 (15.0) 53 (8.4) 336 (12.9) 18.05 0.003
UAIb 233 (61.5) 210 (54.5) 240 (59.3) 248 (62.0) 227 (56.6) 361 (57.0) 1519 (58.4) 7.10 0.213
HIV test in the past 12 months 62 (16.4) 274 (71.2) 178 (44.0) 177 (44.7) 198 (49.7) 338 (53.4) 1227 (47.3) 247.15 <0.001
Coverage of HIV intervention 287 (75.7) 338 (87.8) 301 (74.3) 283 (70.8) 334 (83.3) 538 (85.0) 2081 (79.9) 60.94 <0.001
  1. aPearson chi-square test.
  2. bUAI, unprotected anal intercourse; UVI, unprotected vaginal intercourse.
  3. cLinear-by-linear association chi-square test.