Table 3 Frequency of Chlamydia trachomatis according to sexual and obstetric history

 < 15

299

84.0

57

16.0

1

356

0.875

 16–19

622

84.6

113

15.4

0.95 (0.7–1.3)

735

 > 19

298

85.4

51

14.6

0.90 (0.6–1.3)

349

 1–4

1022

85.3

176

14.7

1

1198

0.015

 5–10

195

82.3

42

17.7

1.25 (0.9–1.8)

237

 > 10

12

60.0

8

40.0

3.87 (1.56–9.61)

20

 0–1

1160

84.7

209

15.3

1

1369

0.709

 2–4

75

81.5

17

18.5

1.26 (0.7–2.2)

92

 > 4

5

83.3

1

16.7

1.11 (0.1–9.5)

6

 0

230

85.2

40

14.8

1

270

0.804

 1–2

543

85.0

96

15.0

1.02 (0.7–1.5)

639

 > 2

443

83.7

86

16.3

1.12 (0.7–1.7)

529

 No

999

85.5

170

14.5

1

1169

0.083

 Yes

130

80.2

32

19.8

1.45 (0.9–2.2)

162