Table 3. Characteristics of children with complete e-HR data, incomplete e-HR data and for whom no e-HR data were received.
| Complete(n = 99) | Incomplete(n = 12) | Not Received(n = 69) | |
|---|---|---|---|
| Male sex, n (%) | 52/99 (53) | 7/12 (58) | 34/69 (49) |
| Gestational age, weeks | 39.6 (1.57) | 40.5 (1.27) | 39.6 (1.27) |
| Delivery by caesarean section, n (%) | 30/99 (30) | 4/12 (33) | 23/69 (33) |
| Cord blood 25(OH) Vitamin D available, n (%) | 79/99 (80) | 7/12 (58) | 55/69 (80) |
| Mean cord blood 25(OH) Vit D (nmol/L) | 26.9 (13.6) | 30.6 (19.1) | 24.3 (11.0) |
| Maternal Ethnicity, n (%) | |||
| Asian | 25/99 (25) | 3/12 (25) | 17/69 (25) |
| Middle Eastern | 25/99 (25) | 5/12 (42) | 15/69 (22) |
| Black | 21/99 (21) | 2/12 (17) | 21/69 (30) |
| Caucasian | 28/99 (28) | 2/12 (17) | 16/69 (23) |
| Maternal age at booking, years | 32 (6.45) | 30 (5.47) | 30 (6.02) |
| Maternal smoking in pregnancy, n (%) | 13/99 (13) | 0/12 (0) | 6/69 (9) |
| Multiparous, n (%) | 65/99 (66) | 5/12 (42) | 31/69 (45) |
| Maternal BMI at booking | 27 (6.07) | 26 (5.51) | 25 (4.99) |
| Maternal 25(OH) Vit D at delivery available n(%) | 86/99 (87) | 10/12 (83) | 62/69 (90) |
| Maternal 25(OH) Vit D at delivery | 42.65 (22.2) | 44.0 (22.3) | 37.9 (18.0) |
Continuous data are presented as mean (standard deviation). BMI = body mass index.