Table 1 Maternal characteristics used as adjustment factors
| Fetal composite (TTTS, TAPS, TOPS, IUGR, IUFD) | ||
|---|---|---|
| At least one fetal complication present (n = 94) |
No fetal complication (n = 83) | |
| Maternal age, mean (SD) years | 30.73 (5.30) | 29.99 (5.53) |
| Maternal BMI, mean (SD) kg/m2 | 24.71 (5.08) | 25.05 (5.77) |
| Maternal smoking status, n (%) | ||
| Never | 64 (75.29) | 63 (79.75) |
| Current smoker | 8 (9.41) | 4 (5.06) |
| Ex-smoker | 13 (15.29) | 12 (15.19) |
| Maternal ethnicity, n (%) | ||
| White | 60 (64.52) | 52 (65.00) |
| Mixed | 3 (3.23) | 7 (8.75) |
| Oriental | 11 (11.83) | 11 (13.75) |
| South Asian | 12 (12.90) | 7 (8.75) |
| African-Caribbean | 7 (7.53) | 3 (3.75) |
| Parity, n (%) | ||
| 0 | 61 (64.89) | 46 (55.42) |
| 1 | 23 (24.47) | 25 (30.12) |
| 2 | 8 (8.51) | 10 (12.05) |
| 3 | 1 (1.06) | 1 (1.20) |
| 4 | 1 (1.06) | 1 (1.20) |
| Assisted conception, n (%) | 14 (15.22) | 10 (12.50) |
| Gestational age at delivery, median (IQR) | 34.36 (30.00, 36.43) | 36.00 (35.00, 36.57) |
| Steroids administration | 67 (71.28) | 58 (70.73) |
| Magnesium sulphate administration | 10 (10.64) | 2 (2.44) |