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Table 2 Factors associated with oligohydramnios among women at 37 weeks of gestation or beyond attending Mbarara Regional Referral Hospital, southwestern Uganda, November 2019–March 2020

From: Prevalence and associated factors of oligohydramnios in pregnancies beyond 36 weeks of gestation at a tertiary hospital in southwestern Uganda

Characteristic

%Oligoydramnios

Unadjusted Analysis

Adjusted Analysis

n/N (%)

OR (95%CI)

P value

Adjusted OR (95%CI)

P value

Age category in years

  < 25

15/156 (9.6)

Ref

 

Ref

 

  ≥ 25

25/270 (9.3)

0.96 (0.49—1.9)

0.903

1.7 (0.76—3.9)

0.196

Anaemia in pregnancy

 No

38/421 (9.0)

Ref

 

Ref

 

 Yes

2/5 (40.0)

6.72 (1.1—42)

0.040

4.5 (0.57—36)

0.154

Had malaria in pregnancy

 No

34/407 (8.4)

Ref

 

Ref

 

 Yes

6/19 (31.6)

5.1 (1.8—14)

0.002

4.6 (1.5—14)

0.008

Gravidity

 1

23/151 (15.2)

3.4 (1.6—7.2)

0.001

3.7 (1.6—6.7)

0.002

 2–4

11/218 (5.1)

Ref

 

Ref

 

  ≥ 5

6/57 (10.5)

2.2 (0.78—6.3)

 

2.6 (0.85—7.8)

0.094

Gestational age

 37—39 weeks

12/231 (5.2)

Ref

 

Ref

 

 40—41 weeks

18/154 (11.7)

2.4 (1.1—5.2)

0.023

2.5 (1.1 – 5.6)

0.022

  > 41 weeks

10/41 (24.4)

5.9 (2.4—15)

 < 0.001

6.0 (2.3—16)

 < 0.001

Booking blood pressure in mmHg

  < 130/80

25/288 (8.7)

Ref

   

  ≥ 130/80

15/138 (10.9)

1.28 (0.65—2.52)

0.469

  

Body mass index in kg/m2

  > 25 kg/m2

30/379 (7.9)

Ref

 

Ref

 

  ≤ 25 kg/m2

10/47 (21.3)

3.1 (1.4—6.9)

0.005

2.88 (0.98—7.5)

0.053

Estimated fetal weight in kilograms

  < 2.5

1/14 (7.1)

Ref

   

 2.5—3.5

28/265(10.6)

1.54 (0.19—12)

0.685

  

  > 3.5

11/148 (7.5)

1.1 (0.13—8.8)

0.963

  
  1. Ref Reference category, OR Odds ratio, CI Confidence interval