Table 1.

Variables analyzed in the study

Variable	Case	Control	p value
Age (years) of mothers (mean±SD)	25.3±6.1	24.3±5.03	0.505
Age-group (years) of mothers (%)
17-24	56.3	65.6
25-32	31.3	25.0
33-40	12.5	09.4
BMI (mean±SD)	21.8±2.3	22.7±3.2	0.168
Occupation of mothers
Housewife, no. (%)	32 (100)	30 (93.8)
Employed, no. (%)	0 (0)	2 (6.3)	0.472
Socioeconomic status
Middle*, no. (%)	13 (40.6)	11(34.4)
Lower†, no. (%)	19 (59.4)	21 (65.6)	0.565
Parity of mothers (mean±SD)	2.2±1.1	1.5±0.8	0.007
Antenatal check-up
Regular$, no. (%)	14 (43.7)	8 (25.0)
Irregular§, no. (%)	8 (25.0)	5 (15.6)
None (%)	10 (31.3)	19 (59.4)	0.077
Gestational age at delivery (mean±SD)	36.6±1.8	37.8±1.2	0.004
Mode of delivery
Vaginal delivary, no. (%)	24 (75.0)	15 (46.9)
Caesarean section, no. (%)	8 (25.0)	17 (53.1)	0.021
Volume of liquor
Normal	29 (90.6)	32 (100)
High	3 (9.4)	0 (0.0)	0.237

The p value is significant if <0.05;

*Middle class was categorized arbitrarily based on family income (Tk 10,000-20,000 per month);

†Lower class was categorized arbitrarily based on family income (<Tk 10,000 per month);

$At least 3 visits during pregnancy;

§Irregular antenatal check-up: less than 3 visits during pregnancy;

BMI=Body mass index;

SD=Standard deviation