Table 3 Participant demographics based on recruitment strategy (randomised participants only)
Characteristic | Recruitment strategy | p-valuea | ||
|---|---|---|---|---|
Practitioner-led referral, N = 312 | Researcher-led referral, N = 157 | Self-referral, N = 13 | ||
Age at randomisation in years, mean (SD) | 25.3 (5.9) | 28.6 (6.3) | 29.9 (7.4) | < 0.001 |
SIMD quintile, n (%) | ||||
 Q1 (most deprived area) | 209 (67.0) | 82 (52.2) | 9 (69.2) | < 0.001 |
 Q2 | 54 (17.3) | 20 (12.7) | 0 (0) |  |
 Q3 | 29 (9.3) | 16 (10.2) | 0 (0) |  |
 Q4 | 10 (3.2) | 9 (5.7) | 1 (7.7) |  |
 Q5 (least deprived area) | 10 (3.2) | 29 (18.5) | 3 (23.1) |  |
 Missing | 0 (0) | 1 (0.6) | 0 (0) |  |
Ethnicity, n (%) | ||||
 White | 298 (95.5) | 145 (92.4) | 10 (76.9) | 0.001 |
 Asian | 4 (1.3) | 8 (5.1) | 1 (7.7) |  |
 Black | 4 (1.3) | 3 (1.9) | 2 (15.4) |  |
 Others | 3 (1.0) | 0 (0) | 0 (0) |  |
 Missing | 3 (1.0) | 1 (0.6) | 0 (0) |  |
Number of pregnancies, n (%) | ||||
 1 | 142 (45.5) | 69 (43.9) | 4 (30.8) | 0.755 |
 2–3 | 103 (33.0) | 54 (34.4) | 5 (38.5) |  |
 4–5 | 40 (12.8) | 25 (15.9) | 3 (23.1) |  |
 6+ | 27 (8.7) | 9 (5.7) | 1 (7.7) |  |
 Missing | 0 (0) | 0 (0) | 0 (0) |  |
Relationship status, n (%) | ||||
 In a relationship | 246 (78.8) | 135 (86.0) | 11 (84.6) | 0.458 |
 Separated | 10 (3.2) | 2 (1.3) | 0 (0) |  |
 Single | 48 (15.4) | 19 (12.1) | 2 (15.4) |  |
 Missing | 8 (2.6) | 1 (0.6) | 0 (0) |  |
Highest educational qualification, n (%) | ||||
 None | 52 (16.7) | 16 (10.2) | 1 (7.7) | < 0.001 |
 Secondary/vocational | 176 (56.4) | 54 (34.4) | 5 (38.5) |  |
 Higher/A level/HNC/HND | 42 (13.5) | 30 (19.1) | 0 (0) |  |
 Undergraduate degree | 12 (3.8) | 33 (21.0) | 4 (30.8) |  |
 Postgraduate qualification | 6 (1.9) | 18 (11.5) | 3 (23.1) |  |
 Other | 5 (1.6) | 1 (0.6) | 0 (0) |  |
 Missing | 19 (6.1) | 5 (3.2) | (0) |  |
Employment status, n (%) | ||||
 Currently employed | 61 (19.6) | 86 (54.8) | 9 (69.2) | < 0.001 |
 Previously employed | 96 (30.8) | 20 (12.7) | 3 (23.1) |  |
 Never employed | 154 (49.4) | 50 (31.8) | 1 (7.7) |  |
 Missing | 1 (0.3) | 1 (0.6) | 0 (0) |  |
Smoking status, n (%) | ||||
 Ex-smoker | 102 (32.7) | 52 (33.1) | 4 (30.8) | 0.001 |
 Non-smoker | 84 (26.9) | 69 (43.9) | 7 (53.8) |  |
 Smoker | 125 (40.1) | 36 (22.9) | 2 (15.4) |  |
 Missing | 1 (0.3) | 0 (0) | 0 (0) |  |
Number of known additional health and social care needs, mean (SD) | 3.8 (2.0) | 2.8 (1.6) | 2.6 (1.6) | < 0.001 |