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Table 1 Demographic characteristics as risk factors for serologically tested STIs

From: The burden and risk factors of Sexually Transmitted Infections and Reproductive Tract Infections among pregnant women in Zimbabwe

Risk factors

Serologic STI Positive

Serologic STI negative

Unadjusted odds ratio (95% CI)

Adjusted odds ratio (95% CI)

Age in years

n = 320

n = 302

  

<20

50 (40)

74 (60)

1

 

20-24

100 (43)

130 (57)

1.14 (0.73-1.77)

1.09 (0.69-1.74)

25-29

96 (61)

62 (39)

2.29 (1.42-3.70)

2.10 (1.28-3.45)

30+

74 (67)

36 (33)

3.04 (1.78-5.20)

2.61 (1.49-4.59)

Type of marriage

n = 313

n = 285

  

Monogamy

277 (50)

272 (50)

1

 

Polygamy

36 (73)

13 (27)

2.71 (1.41-5.24)

2.16 (1.06-4.39)

Income generation

n = 321

n = 299

  

No

262 (49)

268 (51)

1

 

Yes

59 (66)

31 (34)

1.95 (1.22-3.10)

1.60 (0.95-2.68)

Gravidae

n = 322

n = 300

  

Prima-graviade

75 (34)

145 (66)

1

 

Multigravidae

247 (61)

155 (39)

3.08 (2.18-4.34)

3.89 (1.27-11.91)

Parity

n = 322

n = 300

  

No children

86 (36)

151 (64)

1

 

More than one child

236 (61)

149 (39)

2.78 (1.96-3.94)

0.61 (0.20-1.91)

History of infant death

n = 310

n = 298

  

No

274 (49)

281 (51)

1

 

Yes

36 (72)

14 (28)

2.63 (1.39-4.99)

1.24 (0.54-2.87)

History of stillbirths

n = 320

n = 298

  

No

284 (50)

284 (50)

1

 

Yes

36 (72)

14 (28)

2.57 (1.36-4.87)

1.47 (0.64-3.39)

History of contraception

n = 321

n = 299

  

No

87 (38)

142 (55)

1

 

Yes

234 (60)

157 (40)

2.43 (1.74-3.40)

0.94 (0.52-1.71)

Ever used condoms

n = 314

n = 292

  

No

161 (48)

174 (52)

1

 

Yes

153 (56)

118 (44)

1.40 (1.02-1.93)

1.34 (0.92-1.93)

  1. Serologically tested STIs positive was the outcome in multivariate analysis