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Table 1 Descriptive Analysis of the characteristics of pregnant women with low birth weight infants compared to those with normal birth weight infants

From: Impact of maternal respiratory infections on low birth weight - a community based longitudinal study in an urban setting in Pakistan

Pregnant women characteristics

Sample size (n)

Birth weight

<2.5 kg (n = 51)

> = 2.5 kg (n = 192)

Age of pregnant women Mean(SD); years

243

23.0 (3.8)

24.4 (4.5)

Pregnant women’s education; n (%)

No formal schooling

237

35 (68.6)

126 (65.6)

Below 10th grade

 

8 (15.7)

38 (19.8)

10th grade and above

 

6 (11.8)

24 (12.5)

Weight at first visit of pregnant women mean(SD); kg

243

49.0 (9.0)

53.6 (11.7)

Height of pregnant women mean(SD); cm

243

153.1 (4.5)

152.6 (11.5)

Gravidity, Median (IQR)

240

3 (2)

3 (3)

Household characteristics

No of people living in household, Mean(SD)

243

8.9 (5.5)

8.7 (5.5)

No of rooms in the household Mean(SD)

242

2.5 (1.5)

2.4 (1.4)

Total score of household assets, Mean(SD)

243

154.3 (141.9)

201.1 (179.0)

Main source of drinking water; n (%)

242

  

Piped into the house

 

16 (31.4)

71 (36.9)

Bought from tankers

 

16 (31.4)

63 (32.8)

Bought from drums

 

19 (37.2)

57 (29.7)

Use of flush toilet facility; n (%)

237

0 (0)

2 (1.0)

Use of boiled water; n (%)

243

10 (19.6)

40 (20.8)

Antenatal characteristics

Age at first pregnancy (years) Mean(SD)

243

18.8 (2.2)

18.9 (3.6)

Child gestational age in weeks Mean(SD)

241

36.6 (1.2)

36.7 (3.9)

Number of antenatal visits during current pregnancy; n (%)

238

  

0

 

36 (70.6)

140 (72.9)

1

 

5 (9.8)

9 (4.7)

2

 

4 (7.8)

23 (11.9)

3 and above

 

5 (9.8)

16 (8.3)

Clinical characteristics

 

Mean (SD)

Mean (SD)

Fever~

243

7.2 (7.4)

6.8 (7.9)

Cough ~

243

10.2 (9.4)

8.5 (7.3)

Difficulty breathing ~

243

10.6 (10.9)

8.2 (7.7)

Runny nose ~

243

10.7 (8.5)

10.9 (7.3)

Sore throat ~

243

10.0 (9.1)

9.1 (8.1)

Headache ~

243

18.7 (13.3)

20.4 (13.1)

Chills ~

243

6.6 (6.1)

5.3 (6.2)

Myalgias/Lethargy

243

19.0 (9.8)

18.0 (9.0)

Diarrhea ~

243

3.3 (4.3)

4.6 (6.8)

Vomiting ~

243

6.2 (9.0)

6.2 (8.9)

Total number of Respiratory symptom episodes* ~

243

102.9 (49.7)

96.1 (41.3)

Infant characteristics

 

Mean (SD)

Mean (SD)

Weight of the infant(kg)

243

2.1 (0.2)

3.0 (0.4)

Height of the infant (cm)

243

45.6 (2.5)

49.5 (3.2)

MUAC** of infant (cm)

241

8.4 (0.9)

9.8 (0.8)

OFC*** of infant(cm)

242

31.7 (1.3)

34.2 (1.4)

  1. * Respiratory symptoms included eight symptoms (cough, difficulty breathing, runny nose, sore throat, headache, chills, and myalgia/lethargy)
  2. ~ Episodes per 100 weeks of pregnancy
  3. **Mid upper arm circumference
  4. ***Occipitofrontal circumference