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Table 2 Multivariate analysis of socio-demographic factors affecting pre-pregnancy BMI values

From: Effects of pre-pregnancy body mass index and gestational weight gain on maternal and infant complications

 

OR (95% CI)

P-value

<  20 vs 20 ~ 25

1.97 (1.20–3.25)

0.008

25 ~ 30 vs 20 ~ 25

1.66 (1.26–2.19)

<  0.001

30 ~ 35 vs 20 ~ 25

2.24 (1.67–2.99)

<  0.001

35 ~ 40 vs 20 ~ 25

3.90 (2.75–5.54)

<  0.001

≥ 40 vs 20 ~ 25

3.33 (1.87–5.92)

<  0.001

Elementary school or below vs college or university

3.53 (1.43–8.75)

0.006

Middle school vs college or university

1.53 (1.22–1.92)

<  0.001

High school vs college or university

1.40 (1.15–1.72)

0.001

Postgraduate degree vs college or university

0.84 (0.61–1.16)

0.299

PhD degree vs college or university

0.34 (0.12–1.02)

0.054

North vs South

1.37 (1.16–1.62)

<  0.001