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Table 4 Multivariate logistic analyses showing the outcomes associated with term low birth weight

From: Association between maternal lifestyle factors and low birth weight in preterm and term births: a case-control study

Variable

 

Reference

P

Crude OR

Adjusted ORa

95%CI

Passive smoking

Yes

No

0.019

1.356

1.404

1.057–1.864

Gestational gain

Less

Normal

0.009

1.659

1.484

1.103–1.998

More

 

< 0.001

0.431

0.369

0.236–0.577

Economic status (Ұ/month)

3001–5000

≤3000

0.032

0.669

0.715

0.526–0.971

5001–7000

 

0.104

0.576

0.687

0.437–1.080

> 7000

 

0.026

0.391

0.526

0.299–0.926

Pre-pregnancy BMI

< 18.5

18.5–23.9

< 0.001

2.008

1.718

1.278–2.310

24–27.9

 

0.826

0.965

1.065

0.607–1.868

≥28

 

0.569

1.079

1.409

0.433–4.579

Parity

>1

1

< 0.001

0.535

0.506

0.368–0.695

History of LBW

Yes

No

< 0.001

3.728

4.087

2.070–8.069

Antenatal care

5–9

≤4

0.344

0.664

0.808

0.519–1.257

10–14

 

0.014

0.425

0.557

0.349–0.889

≥15

 

0.024

0.222

0.305

0.108–0.858

Gestational hypertension

Yes

No

< 0.001

4.600

6.598

3.915–11.122

  1. note: OR odds ratio; CI confidence interval; LBW low birth weight; BMI body mass index; Control normal weight term baby
  2. aVariables in the logistic regression include maternal characteristics, pre-pregnancy BMI, parity, history of LBW, antenatal care, fetal sex, and gestational hypertension