Table 2 Recruitment and retention
Recruitment | Site 1 | Site 2 | Total |
|---|---|---|---|
Identified (% total) | 131 (46%) | 153(54%) | 284 |
Not eligible (% identified) | 68 (52%) | 98(64%) | 166 (58%) |
Reasons not eligible (% identified) | |||
   > 20 weeks | 21 (16%) | 38 (25%) | 59 (21%) |
   Language barrier | 13 (10%) | 36 (23%) | 49 (17%) |
   Unable to contact | 13 (10%) | 4 (3%) | 17 (6%) |
   Miscarriage | 10 (8%) | 9 (6%) | 19 (7%) |
   In specialist clinic | 7 (5%) | 7 (5%) | 14 (5%) |
   Other | 4 (3%) | 4(2%) | 8 (3%) |
Given information | 63 | 55 | 118 |
Recruited (% received information) | 32 (51%) | 22 (40%) | 54 (46%) |
Declined | 31 (49%) | 33 (60%) | 64 (54%) |
Main reason (% declined) | |||
   Unwilling to commit | 24 (77%) | 27 (81%) | 51 (80%) |
   Unwilling to complete questionnaires | 7 (23%) | 6 (18%) | 13 (20%) |
Retention | |||
Completed study (% recruited) | 25 (78%) | 17 (77%) | 42 (77%) |
Withdrew (% recruited) | 5 (16%) | 3 (14%) | 8 (15%) |
Main reasons | |||
   Unwilling to complete questionnaires | 3 | 2 | 5 |
   Adverse outcome | 1 (2nd trimester miscarriage) | 1 (Preterm birth NND) | 2 |
Moved | 1 | 0 | 1 |
Lost to follow up | 2 (postnatal) | 2 (1 postnatal) | 4 (7%) |