Table 1. Demographic characteristics of women participating or not consenting to participate in the study.
| Maternal Characteristic | Participants recruited (n = 305) | Non-consenters (n = 46) | p value |
| Age | 28 (17–46) | 28 (18–43) | 0.77 |
| BMI | 25.2 (17.2–52.8) | 24.0 (18.1–44.1) | 0.20 |
| Gravidity | 2 (1–9) | 2 (1–8) | 0.97 |
| Parity | 1 (0–7) | 1 (0–4) | 0.79 |
| Ethnicity | |||
| Bangladeshi | 4 (1.3%) | 5 (10.9%) | p<0.001 |
| Black African | 29 (9.5%) | 4 (8.7%) | |
| Black Caribbean | 17 (5.6%) | 3 (6.5%) | |
| Chinese | 3 (1.0%) | 1 (2.2%) | |
| European | 171 (56.1%) | 7 (15.2%) | |
| Indian | 9 (3.0%) | 3 (6.5%) | |
| Middle Eastern | 15 (4.9%) | 3 (6.5%) | |
| Mixed Ethnicity | 16 (5.2%) | 1 (2.2%) | |
| Pakistani | 38 (12.5%) | 18 (39.1%) | |
| South East Asian | 3 (1.0%) | 1 (2.2%) | |
| Cigarette smokers | 43 (14.1%) | Not recorded as declined to participate | N/A |
| Gestation at Presentation (weeks+days) | 36+2 (28+0–42+0) | 38+3 (28+6–41+2) | 0.003 |
| Duration of RFM (hours) | 48 (3–1690) | 24 (5–168) | 0.001 |
| History of absent fetal movements | 110 (36.1%) | 7 (21.7%) | 0.004 |
| Duration of absent fetal movements (hours) | 7 (2–96) | 14 (10–48) | 0.86 |
| Average number of movements in 45 minutes | 9 (0–72) | Not recorded as declined to participate | N/A |