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Table 2 Univariate analysis of maternal health and pregnancy history, risk factors for LBW in Peshawar, 2003.

From: Risk factors for low birthweight in the public-hospitals at Peshawar, NWFP-Pakistan

Variable

 

Birthweight

OR

95% CI

  

<2.5 kg

≥ 2.5 kg

  
 

(N = 1039)

(n = 101)

(n = 938)

  

Gestational age

     

Preterm

229(22.8)

60(26.2)

169(73.8)

6.4

[4.1, 9.8] **

Full term

776(77.2)

41(5.3)

735(94.7)

  

Maternal diabetes

     

Yes

27(2.7)

3(11.1)

24(88.9)

1.2

[0.4, 3.9]

No

974(97.3)

96(9.9)

878(90.1)

  

Maternal hypertension

     

Yes

183(18.3)

25(13.7)

158(86.3)

1.6

[1.0, 2.6]*

No

816(81.7)

74(9.1)

742(90.9)

  

Maternal anaemia

     

Yes

383(38.5)

47(12.3)

336(87.7)

1.5

[1.0, 2.3] *

No

613(61.5)

52(8.5)

561(91.5)

  

Other health conditions

     

Yes

59(6.0)

8(13.6)

51(86.4)

1.5

[0.7, 3.3]

No

918(94.0)

87(9.5)

831(90.5)

  

Maternal height

     

<1.55 mtr

310(30.8)

38(12.3)

272(87.7)

1.4

[0.9, 2.2]

≥ 1.55 mtr

696(69.2)

62(8.9)

634(91.1)

  

Maternal weight

     

<57 kg

246(24.4)

35(14.2)

211(85.8)

1.8

[1.2, 2.8] **

≥ 57 kg

763(75.6)

65(8.5)

698(91.5)

  

Maternal BMI

     

≤ 19.0 kg/m2

40(4.0)

4(10)

36(90)

1.0

[0.4, 2.9]

>19.0 kg/m2

958(96.0)

96(10)

862(90)

  

Any abortion/miscarriage a

     

Yes

232(22.7)

33(14.2)

199(85.8)

1.8

[1.1, 2.7] *

No

788(77.3)

68(8.6)

720(91.4)

  

Abortion/miscarriage b

     

Yes

172(17.2)

25(14.5)

147(85.5)

1.7

[1.1, 2.8] *

No

826(82.8)

74(9.0)

752(91.0)

  

Gap between pregnancies c

     

<1.5 years

220(33.2)

25(11.4)

195(88.6)

1.1

[0.7, 1.9]

≥ 1.5 years

443(66.8)

46(10.4)

397(89.6)

  

Pregnancy registration

     

No

545(53.9)

67(12.3)

478(87.7)

1.8

[1.2, 2.8] **

Yes

467(46.1)

34(7.3)

433(92.7)

  
  1. **p < 0.01, *p < 0.05, BMI (body mass index), a History of any abortion/miscarriage in reproductive life, | b Abortion/miscarriage immediately preceding this pregnancy, c gap between this and the previous pregnancy (excluding primiparas mothers).