Table 2

Maternal characteristics

	n (n=7504)	%
Age categories (years)
<18	95	1.2
18–24	1862	24.8
25–34	4253	56.6
35–39	1036	13.8
>40	224	2.9
Missing
Number of pregnancies*
1	2870	38.24
2	2313	30.82
≥3	2285	30.47
Missing	34	0.45
Education
None	23	0.31
Primary	235	3.13
Secondary	6028	80.33
Higher	1181	15.74
Missing	37	0.49
Work
Not reported by the mother	77	1.03
Working	1136	15.14
Housewife	6253	83.33
Missing	38	0.51
Marital status
Married	7350	97.95
Unmarried	96	1.28
Living together	20	0.27
Missing	38	0.51
Nutritional status†
Underweight	670	8.93
Normal	5231	69.71
Overweight	1110	14.79
Obese	440	5.86
Missing	53	0.71
Medical conditions/risk factors (any)‡	4182	55.73
Gestational diabetes, total	1002	13.36
On medical nutrition therapy	417	5.56
On drug therapy	585	7.8
Gestational age <37 ≥41 weeks	966	12.87
Previous CS	956	12.74
Hypertensive disorders of pregnancy, any	506	6.74
Pregestational hypertension	168	2.24
Gestational hypertension	179	2.39
Pre-eclampsia not severe	78	1.04
Pre-eclampsia severe	69	0.92
Eclampsia	12	0.16
IUGR at ultrasound	504	6.72
Obesity	440	5.86
Breech/transverse/oblique lie	339	4.52
Pregestational diabetes	266	3.54
Maternal cardiac disease	234	3.12
Fetal conditions, other	223	3.1
Maternal hypothyroidism	219	2.92
Maternal age >40	224	2.9
Oligohydramnios	131	1.75
APH	112	1.49
Polyhydramnios	96	1.28
Multiple pregnancies	84	1.12
Severe anaemia	40	0.53
Chorioamnionitis	11	0.15

*Including the ongoing pregnancy.
†As defined by National Guidelines in Sri Lanka.
‡Any of the medical conditions/risk factors described in the following rows.
APH, antepartum haemorrhage; CS, caesarean section; IUGR, intrauterine growth restriction.