Table 1 Characteristics of sexual minority women at baseline in Beijing, China.

From: Sexually transmitted infections and associated risk factors among sexual minority women in China

Characteristic

No. (%) of SMW (N = 219)

No. (%) of WSW/M in the past yeara (N = 34)

No. (%) of WSW exclusive in the past yearb (N = 185)

P value

Demographics

 Age (years)

  Median (IQR)

27 (24–32)

27 (24–29)

27 (24–32)

 

  20–29

142 (64.8)

26 (76.5)

116 (62.7)

0.313

  30–39

63 (28.8)

7 (20.6)

56 (30.3)

0.663

  40–57

14 (6.4)

1 (2.9)

13 (7.0)

 

 Ethnicity

  Han Chinese

198 (90.4)

32 (94.1)

166 (89.7)

0.543*

  Other

21 (9.6)

2 (5.9)

19 (10.3)

 

 Beijing local residence

  Yes

77 (35.2)

11 (32.4)

66 (35.7)

0.709

  No

142 (64.8)

23 (67.6)

119 (64.3)

 

 Education

  Junior high school or below

1 (0.5)

0 (-)

1 (0.5)

1.000

  Senior high school

8 (3.7)

0 (-)

8 (4.3)

1.000

  Undergraduate

155 (70.8)

26 (76.5)

129 (69.7)

0.700

  Graduate or above

55 (25.1)

8 (23.5)

47 (25.4)

 

 Marital status

  Unmarried, living alone or with parents

141 (64.4)

25 (73.5)

116 (62.7)

0.499

  Married (non-contract)

3 (1.4)

3 (8.8)

0 (0)

0.999

  Married (contract)

3 (1.4)

0 (0)

3 (8.8)

0.999

  Unmarried, living with a female sex partner

67 (30.6)

3 (8.8)

64 (34.6)

0.082

  Unmarried, living with a male sex partner

2 (0.9)

2 (5.9)

0 (0)

0.999

  Divorced, or widowed

3 (1.4)

1 (2.9)

2 (1.1)

 

 Employment status

  Student

68 (31.1)

14 (41.2)

54 (29.2)

0.693

  Employed full-time

119 (54.3)

11 (32.4)

108 (58.4)

0.662

  Freelance

25 (11.4)

8 (23.5)

17 (9.2)

0.372

  Unemployed

7 (3.2)

1 (2.9)

6 (3.2)

 

 Monthly income

  No income

41 (18.7)

8 (23.5)

33 (17.8)

0.290

   < CNY 5,000

44 (20.1)

11 (32.4)

33 (17.8)

0.092

  CNY 5001–10,000

82 (37.4)

9 (26.5)

73 (39.5)

0.920

   ≥ CNY 10,000

52 (23.7)

6 (17.6)

46 (24.9)

 

 Self-reported sexual orientation

  Homosexual

152 (69.4)

9 (26.5)

143 (77.3)

0.465

  Heterosexual

2 (0.9)

1 (2.9)

1 (0.5)

0.272

  Bisexual

57 (26.0)

23 (67.6)

34 (18.4)

0.158

  Otherc

8 (2.7)

1 (2.9)

7 (3.8)

 

 Planned ways to give birth to a baby

  Already had a baby

3 (1.4)

0 (0)

3 (1.6)

0.999

  Artificial insemination

49 (22.4)

8 (23.5)

41 (22.2)

0.457

  Give birth in a wedlock

13 (5.9)

8 (23.5)

5 (2.7)

 < 0.001

  Surrogacy

6 (2.7)

0 (0)

6 (3.2)

0.999

  No plan to give birth to a baby

148 (67.5)

18 (52.9)

130 (70.3)

 

Sexual behavior

 Sex of the first sexual partner

  Female

166 (75.8)

16 (47.1)

150 (81.1)

 < 0.001

  Male

53 (24.2)

18 (52.9)

35 (18.9)

 

 Age of female-female sexual debut

  Median (IQR)

19 (18–22)

21 (19–23)

19 (18–22)

 

  13–15

14 (6.4)

1 (2.9)

13 (7.0)

0.296

  16–22

159 (72.6)

24 (70.6)

135 (73.0)

0.469

  23–37

46 (21.0)

9 (26.5)

37 (20.0)

 

 Number of sexual partners ever

  1

40 (18.3)

0 (0)

40 (21.6)

0.997

  2–5

124 (56.6)

21 (61.8)

103 (55.7)

0.294

   > 6

55 (25.1)

13 (38.2)

42 (22.7)

 

 Number of sexual partners in the past year

  0

16 (7.3)

0 (0)

16 (8.6)

0.998

  1

143 (65.3)

8 (23.5)

135 (73.0)

 < 0.001

  2–5

53 (24.2)

20 (58.8)

33 (17.8)

0.040

   > 6

7 (3.2)

6 (17.6)

1 (0.5)

 

 Specific sexual behaviors in the past year

  Oral sex

158 (72.1)

27 (79.4)

131 (70.8)

0.304

  Vaginal sex

217 (99.1)

34 (100.0)

183 (98.9)

1.000

  SM

24 (11.0)

9 (26.5)

15 (8.1)

0.004*

  Group sex

2 (0.9)

1 (2.9)

1 (0.5)

0.287*

  Anal sex

23 (10.5)

9 (26.5)

14 (7.6)

0.003*

 Number of female sexual partners in the past year

  0

35 (16.0)

9 (26.5)

26 (14.1)

0.829

  1

137 (62.6)

13 (38.2)

124 (67.0)

0.240

  2–3

38 (17.4)

10 (29.4)

28 (15.1)

0.800

   > 3

9 (4.1)

2 (5.9)

7 (3.8)

 

 Specific female-female sexual behaviors in the past year

  Digital-clitoral contact

165 (75.3)

24 (70.6)

141 (76.2)

0.484

  Digital-vaginal contact

171 (78.1)

24 (70.6)

147 (79.5)

0.250

  Oral-clitoral contact

141 (64.4)

23 (67.6)

118 (63.8)

0.665

  Oral-vaginal contact

100 (45.7)

19 (55.9)

81 (43.8)

0.193

  Clitoral-clitoral contact

53 (24.2)

10 (29.4)

43 (23.2)

0.440

  Use sex toys with clitoris

86 (39.3)

13 (38.2)

73 (39.5)

0.893

  Use sex toys with vagina

69 (31.5)

14 (41.2)

55 (29.7)

0.187

 Used a sex toy with female sexual partners in the past year

  Yes

125 (57.1)

20 (58.8)

105 (56.8)

0.823

  No

94 (42.9)

14 (41.2)

80 (43.2)

 

 Shared a sex toy with female sexual partners in the past year

  Yes

73 (33.3)

13 (38.2)

60 (32.4)

0.509

  No

146 (66.7)

21 (61.8)

125 (67.6)

 

 Stimulating G-spot during female –female sex

  Yes

131 (59.8)

23 (67.6)

108 (58.4)

0.311

  No

88 (40.2)

11 (32.4)

77 (41.6)

 

 Seeking female sex partners via internet

  Yes

132 (60.3)

23 (67.6)

109 (58.9)

0.339

  No

87 (39.7)

11 (32.4)

76 (41.1)

 

 Ever taking alcohol during sex in the past year

  Yes

76 (34.7)

15 (44.1)

61 (33.0)

0.210

  No

143 (65.3)

19 (55.9)

124 (67.0)

 

Sexual health

 Main symptoms during female-female sex in the past year (N = 184)

  Increased leucorrhea

36 (19.6)

5 (20.0)

31 (19.5)

1.000*

  Bellyache

16 (8.7)

2 (2.0)

14 (8.8)

1.000*

  Vulvar discomfort

51 (27.7)

6 (24.0)

45 (28.3)

0.655

  Bleeding

36 (19.6)

4 (16.0)

32 (20.1)

0.629

  No symptoms

87 (47.3)

13 (52.0)

74 (46.5)

0.611

 Ever had symptoms of painful urination, abnormal vaginal discharge, or genital ulcer in the past year

  Yes

59 (26.9)

14 (41.2)

45 (24.3)

0.042

  No

160 (73.1)

20 (58.8)

140 (75.7)

 

 Ways to cope with the symptoms of painful urination, abnormal vaginal discharge, or genital ulcer (N = 59)

  See a doctor

23 (39.0)

5 (35.7)

18 (40.0)

0.774

  Purchase non-prescription drugs

24 (40.7)

3 (21.4)

21 (46.7)

0.093

  Douching

29 (49.2)

5 (35.7)

24 (53.3)

0.249

  Do nothing

14 (23.7)

3 (21.4)

11 (24.4)

0.817

 Infected STIsd

  Chlamydia

9 (4.1)

7 (20.6)

2 (1.1)

 < 0.001*

  Herpes simplex virus type 2 IgM + (HSV-2 IgM +)

3 (1.4)

3 (8.8)

0 (0)

0.003*

  Herpes simplex virus type 2 IgG + (HSV-2 IgG +)

8 (3.7)

1 (2.9)

7 (3.8)

1.000*

  Syphilis IgM + and IgG + 

1 (0.5)

0 (0)

1 (0.5)

1.000*

  Trichomonas

1 (0.5)

0 (0)

1 (0.5)

1.000*

  Candidiasis

1 (0.5)

1 (2.9)

0 (0)

1.000*

  Infected with any STIs

16 (7.3)

8 (23.5)

8 (4.3)

0.001*

Risk perception and health seeking behavior

 Perceived risk of getting infected with sexually transmitted diseases via female-female sex

  No idea

14 (6.4)

1 (2.9)

13 (7.0)

0.373

  Low

103 (47.0)

20 (58.8)

83 (44.9)

0.779

  Medium

82 (37.4)

10 (29.4)

72 (38.9)

0.811

  High

20 (9.1)

3 (8.8)

17 (9.2)

 

 Had tested for STIs ever

  Yes

137 (62.6)

25 (73.5)

112 (60.5)

0.150

  No

82 (37.4)

9 (26.5)

73 (39.5)

 

 Had tested for STIs in the past year

  Yes

128 (58.4)

24 (70.6)

104 (56.2)

0.118

  No

91 (41.6)

10 (29.4)

81 (43.8)

 

 Routes of seeking knowledge of STIs

  Internet

207 (94.5)

33 (97.1)

174 (94.1)

0.697*

  Doctors

52 (23.7)

10 (29.4)

42 (22.7)

0.398

  Free publicity materials

59 (26.9)

7 (20.6)

52 (28.1)

0.364

  On campus

58 (26.5)

10 (29.4)

48 (25.9)

0.674

  1. SMW sexual minority women, IQR inter-quartile range, CNY Chinese Yuan, SM sadomasochism, STIs sexually transmitted infections, IgM immunoglobulin M; IgG immunoglobulin G.
  2. *Fisher exact test.
  3. a“WSW/M in the past year” refers to women who had had sex with both women and men in the past year.
  4. b“WSW exclusive in the past year” refers to women who had only had sex with women in the past year.
  5. cOther includes four pansexual women, two asexual women, one woman of uncertain sexuality.
  6. dOne woman infected with trichomonas and HSV-2 IgG + , one syphilis (IgM + and IgG +) and HSV-2 IgG + , two chlamydia and HSV-2 IgM + , two chlamydia and HSV-2 IgG + , one chlamydia and candidiasis. Four women only infected with chlamydia, one HSV-2 IgM + , and four HSV-2 IgG +.