Table 1.
Maternal demographics of women with bile acid concentration greater than 10 µmol/L.
| Site 1n = 317 | Site 2n = 214 | All womenn = 531 | |
|---|---|---|---|
| Age (years; median [IQR]) | 34 [30–37] | 31 [27–35] | 33 [29–36] |
| Age category (n (%)) | |||
| <20 | 1 (0.3) | 5 (2.3) | 6 (1.1) |
| 20–29 | 65 (20.5) | 69 (32.2) | 134 (25.2) |
| 30–39 | 184 (58.0) | 123 (57.5) | 307 (57.8) |
| ≥40 | 47 (14.8) | 17 (7.9) | 64 (12.1) |
| Not recorded | 20 (6.3) | 0 (0.0) | 20 (3.7) |
| Ethnic origin (n (%)) | |||
| White | 124 (39.1) | 75 (35.0) | 199 (37.5) |
| Asian | 38 (12.0) | 109 (50.9) | 147 (27.7) |
| Black | 40 (12.6) | 19 (8.9) | 59 (11.0) |
| Other | 7 (2.2) | 6 (2.8) | 13 (2.4) |
| Mixed | 9 (2.8) | 2 (0.9) | 11 (2.1) |
| Not recorded or declined | 99 (31.2) | 3 (1.4) | 102 (19.2) |
| BMI (kg/m2; median [IQR]) | 23.6 [20.8–27.2] | 25.0 [23.0–28.0] | 24.0 [21.9–27.7] |
| BMI category (kg/m2; n (%)) | |||
| <20 | 37 (11.7) | 13 (6.1) | 50 (9.4) |
| 20–24.9 | 131 (41.3) | 84 (39.3) | 215 (40.5) |
| 25–29.9 | 65 (20.5) | 73 (34.1) | 138 (26.0) |
| 30–34.9 | 17 (5.4) | 27 (12.6) | 44 (8.3) |
| ≥35 | 15 (4.7) | 15 (7.0) | 30 (5.6) |
| Not recorded | 52 (16.3) | 2 (0.9) | 54 (10.1) |
| Parity (n (%)) | |||
| 0 | 176 (55.5) | 112 (52.3) | 288 (54.2) |
| 1 | 77 (24.3) | 75 (35.0) | 152 (28.6) |
| 2 | 27 (8.5) | 15 (7.0) | 42 (7.9) |
| >2 | 18 (5.6) | 12 (5.6) | 30 (5.6) |
| Not recorded | 19 (6.0) | 0 (0.0) | 19 (3.6) |
IQR: interquartile range; BMI: body mass index.