Table 2 Demographic characteristics for the whole sample (overall and by intervention and control group) (N = 2702)
From: Improving postal survey response using behavioural science: a nested randomised control trial
Variable | Control | Intervention | Total |
|---|---|---|---|
Total | 1349 (49.9%) | 1353 (50.1%) | 2702 (100%) |
Age (years) | |||
Mean (SD) | 37.4 (10.8) | 37.6 (11.1) | 37.5 (11.0) |
Missing [n (%)] | 1 (0.074%) | 0 (0%) | 1 (< 0.001%) |
IMD score | |||
Mean (SD) | 28.2 (18.2) | 26.5 (16.5) | 27.3 (17.4) |
Missing [n (%)] | 67 (5.0%) | 85 (6.3%) | 152 (5.6%) |
IMD quintile (N = 2550, 94.4%) | |||
Quintile 1 (most deprived) | 435 (33.9%) | 374 (29.5%) | 808 (31.7%) |
Quintile 2 | 279 (21.8%) | 344 (27.2%) | 623 (24.5%) |
Quintile 3 | 259 (20.2%) | 236 (18.6%) | 495 (19.4%) |
Quintile 4 | 178 (13.9%) | 173 (13.7%) | 351 (13.8%) |
Quintile 5 (least deprived) | 131 (10.2%) | 141 (11.1%) | 271 (10.6%) |
NHS site (N = 2702, 100%) | |||
Manchester | 1043 (77.3%) | 1047 (77.4%) | 2090 (77.4%) |
London | 306 (22.7%) | 306 (22.6%) | 612 (22.6%) |
Cervical screening test result (N = 2702, 100%) | |||
1st HPV+/normal cytology | 1103 (50.1%) | 1099 (49.9%) | 2202 (81.5%) |
2nd/3rd consecutive HPV+/normal cytology | 246 (49.2%) | 254 (50.8%) | 500 (18.5%) |