Table 1.

Comparison of baseline characteristics between fertile and infertile women

	Fertile (n=30)	Infertile (n=13)	Odds ratio 95% confidence interval
Age
<25	12(40.0)	6(46.2)	Reference
25–34	15(50.0)	4(30.8)	0.5 (0.1–2.3)
35+	3(10.0)	3(23.1)	1.9 (0.3–12.5)
Education
< 12 years	18(60.0)	5(38.5)	0.3 (0.06–1.4)
12 years	7(23.3)	3(23.1)	0.5 (0.07–2.7)
12 + years	5(16.7)	5(38.6)	Reference
History of PID
No	24(80.0)	11(84.6)	Reference
Yes	11(20.0)	2(15.8)	0.8(0.1–4.4)
History of chlamydia
No	20(66.7)	6(50.0)	Reference
Yes	10(33.3)	6(50.0)	1.9 (0.5–7.5)
History of gonorrhea
No	21(70.0)	9(30.0)	Reference
Yes	11(84.6)	2(15.4)	0.9 (0.2–3.9)
Smoker
No	16(53.3)	8(61.5)	Reference
Yes	14(46.7)	5(38.5)	0.7 (0.2–2.7)
Drug use
No	17(56.7)	6(46.2)	Reference
Yes	13(43.3)	7(53.9)	1.5 (0.4–5.4)
Histologic Endometritis
No	7(25.9)	3(33.3)	Reference
Yes	20(74.1)	6(66.7)	0.7 (0.1–3.4)
Gram stain results
Normal	5(16.7)	4(36.4)	Reference
Intermediate	6(20.0)	2(18.2)	0.5 (0.1–3.5)
BV	19(63.3)	5(45.5)	0.3 (0.1–1.8)
N. gonorrhoeae co-infection
No	15(62.5)	3(33.3)	Reference
Yes	9(37.5)	6(66.7)	3.0 (0.6–14.6)
M. genitalium co-infection
No	18(85.7)	8(14.3)	Reference
Yes	3(72.7)	3(27.3)	2.2 (0.4–13.2)