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Table 3 Association of body-mass index (BMI) with adverse pregnancy outcomes

From: Mid-thigh circumference as an indicator of nutritional status to predict adverse pregnancy outcomes among HIV-infected and HIV-uninfected women in Malawi

Risk Factors

Model 1: LBW

Model 2: PTB

Model 3: SGA

ORa

P-value

95% CIb

aORa

P-value

95% CIc

ORa

P-value

95% CIb

aORa

P-value

95% CIc

ORa

P-value

95% CIb

aORa

P-value

95% CIc

BMI (kg / m2)

0.91

0.01

0.84–0.98

0.93

0.050

0.86–1.00

0.89

0.001

0.84–0.94

0.90

0.001

0.84–0.96

0.94

0.006

0.90–0.98

0.95

0.04

0.91–1.00

HIV (ref cat: HIV-uninfected)

1.48

0.1

0.93–2.35

1.61

0.06

0.98–2.65

1.13

0.52

0.78–1.62

1.10

0.65

0.74–1.63

0.91

0.54

0.69–1.21

1.02

0.90

0.74–1.39

Age (yrs)

0.98

0.39

0.94–1.02

0.97

0.18

0.93–1.01

1.00

0.86

0.97–1.03

1.00

0.88

0.97–1.03

0.96

0.001

0.94–0.98

0.96

0.002

0.94–0.99

Hemoglobin level (ref cat: ≥ 10 g/dL)

1.04

0.90

0.55–1.83

0.89

0.71

0.48–1.64

0.96

0.87

0.58–1.53

0.87

0.58

0.53–1.42

1.10

0.60

0.76–1.58

1.09

0.64

0.75–1.60

Electricity at homed (ref cat: Yes)

1.89

0.009

1.18–3.09

1.81

0.02

1.12–2.94

2.09

0.001

1.44–3.09

1.96

0.001

1.33–2.89

1.33

0.053

1.00–1.77

1.31

0.07

0.98–1.76

  1. Adjusted risk factors: HIV infection status, age, hemoglobin level, and electricity at home (socioeconomic status)
  2. aOR  Crude odds ratio, aOR Adjusted odds ratio
  3. b 95% Confidence Interval for the OR
  4. c 95% Confidence Interval for the aOR
  5. d Indicator of socioeconomic status