Table 1 Study population characteristics by 1^st and 2^nd trimester antenatal booking (N = 325)

Gestational Age (weeks) Mean (SD)

10.33 (2.2)

18.4 (2.9)

-

Age (years) Mean (SD)

Category n (%)

23.7 (4.2)

23.7 (4.7)

0.988

  < 20

13 (15.9)

46 (18.9)

0.621

 20 – 30

61 (74.4)

167 (68.7)

 ≥ 30

8 (9.8)

30 (12.4)

Education n (%)

 Grade 8–11

10 (14.7)

58 (85.3)

 Matriculation and Higher

72 (28.0)

185 (71.9)

0.016*

Parity Mean (SD)

Category n (%)

1.7 (0.8)

1.8 (1.2)

0.510

 1

42 (51.2)

120 (49.4)

 2–3

38 (46.3)

110 (45.3)

0.554

 > 3

2 (2.4)

13 (5.4)

Body Mass Index (kg/m²) Mean (SD)

Category n (%)

27.7 (6.1)

27.4 (5.7)

0.745

  < 30

47 (63.5)

151 (70.9)

  > 30

27 (36.5)

62 (29.1)

0.150

Mode of Delivery n (%)

 Spontaneous Vaginal

59 (23.2)

195 (76.8)

0.079

 Caesarean section after labour

23 (32.4)

48 (67.6)

Birthweight (g)

 Mean (SD)

3142 (372)

3165 (413)

0.665

Estimated Gestational Age (days) at delivery by ultrasound

 Mean (SD)

276 (9)

277 (8)

0.092

Estimated Gestational Age (days) at delivery by LMP

 Mean (SD)

277 (16)

276 (19)

0.626