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Table 1 Characteristics of 6568 respondents stratified by survey year(N,%)

From: What has changed HIV and syphilis infection among men who have sex with men (MSM) in Southwest China: a comparison of prevalence and behavioural characteristics (2013–2017)

Variable

2013

2014

2015

2016

2017

Total

N(%)

N(%)

N(%)

N(%)

N(%)

N(%)

Age (year)

  ≤ 22

218 (24.9%)

266 (23.2%)

313 (23.6%)

313 (19.5%)

301 (18.7%)

1411 (21.5%)

  > 22

657 (75.1%)

883 (76.8%)

1016 (76.4%)

1291 (80.5%)

1310 (81.3%)

5157 (78.5%)

Martial status

Never married

716 (81.8%)

1010 (87.90)

1134 (85.3%)

1312 (81.8%)

1268 (78.7%)

5440 (82.8%)

Married

118 (13.5%)

86 (7.4%)

137 (10.3%)

198 (12.3%)

207 (12.8%)

745 (11.3%)

Other

41 (4.7%)

54 (4.7%)

58 (4.4%)

94 (5.9%)

136 (8.4%)

383 (5.8%)

Household register

Local

707 (81.0%)

912 (79.4%)

1092 (82.2%)

1302 (81.2%)

1252 (77.7%)

5267 (80.2%)

Other city

166 (19.1%)

237 (20.6%)

237 (17.8%)

302 (18.8%)

359 (22.3%)

1301 (19.8%)

Nation

Han

847 (96.8%)

1127 (98.1%)

1306 (98.3%)

1592 (99.3%)

1594 (98.9%)

6466 (98.4%)

Other

28 (3.2%)

22 (1.9%)

23 (1.7%)

12 (0.7%)

17 (1.1%)

102 (1.6%)

Time living in Chongqing

  ≤ 6 months

16 (1.8%)

27 (2.3%)

24 (1.8%)

26 (1.6%)

41 (2.5%)

134 (2.0%)

7–12 months

14 (1.6%)

14 (1.2%)

16 (1.2%)

14 (0.9%)

14 (0.9%)

72 (1.1%)

1–2 year

44 (5.0%)

48 (4.2%)

41 (3.1%)

27 (1.7%)

40 (2.5%)

200 (3.0%)

>2 years

801 (91.5%)

1060 (92.3%)

1248 (93.9%)

1537 (95.8%)

1516 (94.1%)

6156 (93.8%)

Level of education

Primary or below

12 (1.4%)

13 (1.1%)

10 (0.8%)

16 (1.0%)

12 (0.7%)

63 (1.0%)

Junior school

60 (6.9%)

50 (4.4%)

72 (5.4%)

111 (6.9%)

111 (6.9%)

404 (6.2%)

High school

175 (20.0%)

234 (20.4%)

270 (20.3%)

367 (22.9%)

333 (20.7%)

1379 (21.0%)

University

628 (71.8%)

852 (74.2%)

977 (73.5%)

1110 (69.2%)

1155 (71.7%)

4722 (71.9%)

Sexual orientation

Homosexual

595 (68.0%)

873 (76.0%)

956 (71.9%)

1337 (83.4%)

1300 (80.7%)

5061 (77.1%)

Bisexual

0 (0.00%)

0 (0.00%)

0 (0.00%)

1 (0.1%)

2 (0.1%)

3 (0.1%)

Heterosexual

265 (30.3%)

259 (22.5%)

305 (22.9%)

245 (15.3%)

267 (16.6%)

1341 (20.4%)

Unknown

15 (1.7%)

17 (1.5%)

68 (5.1%)

21 (1.3%)

42 (2.6%)

163 (2.5%)

Method of seeking same-sex partner

Physical place

875 (100%)

178 (15.5%)

101 (7.6%)

190 (11.8%)

309 (19.2%)

1650 (25.2%)

Internet

0 (0.00%)

971 (84.5%)

1228 (92.4%)

1414 (88.2%)

1302 (80.8%)

4915 (74.8%)

HIV-related knowledge3

  ≥ 7

772 (88.2%)

1121 (97.6%)

1268 (95.4%)

1055 (65.8%)

1367 (84.9%)

5583 (85.0%)

  < 7

103 (11.8%)

28 (2.4%)

61 (4.60%)

549 (34.2%)

244 (15.1%)

985 (15.0%)

  1. Note.1Five-year average HIV prevalence; 2 Five-year average HIV prevalence.3 Number of correct responses to knowledge items.