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Table 2 Baseline characteristics of participants recruited from the study cities

From: Anatomical site prevalence and genotypes of Chlamydia trachomatis infections among men who have sex with men: a multi-site study in China

Variable

Nanjing n = 101 (%)a

Shenzhen n = 182 (%)a

Wuhan n = 95 (%)a

P value (χ2 test)

Age group (years)

 Younger than 30

74 (73.2)

72 (39.6)

36 (37.9)

< 0.01

 30–40

13 (12.9)

74 (40.6)

34 (35.8)

 Elder than 40

14 (13.9)

36 (19.8)

25 (26.3)

Education

 Secondary school or below

48 (48.0)

109 (59.9)

44 (46.3)

0.14

 High School

21 (21.0)

34 (18.7)

20 (21.1)

 College or upper

31 (31.0)

39 (21.4)

31 (32.6)

Marital status

 Single

83 (83.0)

132 (72.5)

66 (69.5)

0.08

 Married

14 (14.0)

36 (19.8)

17 (17.9)

 Divorce

3 (3.0)

14 (7.7)

12 (12.6)

Local residency

 2 years or shorter

35 (35.4)

36 (19.8)

13 (14.4)

< 0.01

 Longer than 2 years

64 (64.6)

146 (80.2)

77 (85.6)

Sexual orientation

 Homosexual

48 (47.5)

124 (68.1)

57 (60.6)

< 0.01

 Bisexual

53 (52.5)

58 (31.9)

37 (39.4)

Primary role in sex

 Receptive

0 (0.0)

47 (26.6)

33 (35.9)

< 0.01

 Insertive

48 (47.5)

73 (41.2)

28 (30.4)

 Both receptive & insertive

53 (52.5)

57 (32.2)

31 (33.7)

No. partners during past 6 months

 Less than 3

85 (84.2)

114 (62.6)

82 (86.3)

< 0.01

 3 to 5

11 (10.9)

50 (27.5)

9 (9.5)

 More than 5

5 (5.0)

18 (9.9)

4 (4.2)

  1. aThe sum of numbers in some subgroups was less than the total number of participants because some participants did not respond to the questions