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Table 2 Univariate Logistic Regression Analysis of the characteristics of pregnant women to identify factors associated with low birth weight of infants (n = 222)

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

Pregnant women characteristics

Crude OR

(95% CI)

P-value

Pregnant women age (years)

For every 5 year increase

0.7

(0.5 0.9)

0.032

Age at first pregnancy (years)

For every 5 year increase

0.9

(0.6 1.5)

0.796

Gravidity (total number of pregnancies)

For every 1 unit increase

0.8

(0.7 0.9)

0.031

Weight at first visit (kg)

For every 10 kg weight increase

0.6

(0.5 0.9)

0.006

Height of pregnant women (cm)

For every 10 cm increase

0.9

(0.7 1.3)

0.739

Pregnant women education

No education

1

 

0.805

Below high school equivalent

0.8

(0.3 1.8)

 

High school equivalent and above

0.9

(0.3 2.4)

Household characteristics

No of people living in house hold

For every 1 unit increase

1.0

(0.9 1.1)

0.766

No of rooms in the household

For every 1 unit increase

1.0

(0.8 1.3)

0.738

Total score of household assets

For every 200 unit increase

0.7

(0.4 0.9)

0.073

Source of drinking water

Piped water

1

 

0.578

Water bought from tankers

1.1

(0.5 2.4)

Water bought from drums

1.5

(0.7 3.1)

Use of boiled water

Yes

0.9

(0.4 2.0)

0.847

No

1.0

-

Antenatal characteristics

Child gestational age in weeks

For every 1 week increase

0.4

(0.2 0.8)

0.000

First pregnancy

No

1

 

0.798

Yes

0.9

(0.4 2.1)

Number of antenatal visits during current pregnancy

For every 1 visit increase

1.0

(0.8 1.3)

0.828

Delivery location of last child

No previous pregnancy

1

(0.4 2.6)

0.815

Maternity home

1.0

 
 

Home

1.2

(0.5 2.9)

Clinical characteristics

Maternal fevera

For every 10 episode increase

1.1

(0.7 1.6)

0.698

Maternal diarrheaa

For every 5 episode increase

0.8

(0.6 1.1)

0.178

Maternal vomitinga

For every 10 episode increase

0.9

(0.7 1.4)

0.969

Total number of Respiratory symptom episodesa

For every 50 episodes increase

1.2

(0.8 1.8)

0.313

  1. aEpisodes per 100 weeks of pregnancy