Table 4.
Comparison of respondent characteristics between the two randomised groups
| Group A | Group B | |||||
| Respondents | Non-respondents | P value* | Respondents | Non-respondents | P value* | |
| Gender, female | 55.9 (1135) | 46.1 (1259) | <0.001 | 59.7 (185) | 49.8 (689) | 0.002 |
| Age group | <0.001 | <0.001 | ||||
| 16–19 years | 2.4 (49) | 7.3 (200) | 2.3 (7) | 6.4 (88) | ||
| 20–29 years | 7.8 (158) | 20.7 (566) | 9.4 (29) | 17.6 (243) | ||
| 30–49 years | 23.8 (482) | 39.5 (1080) | 37.4 (116) | 38.8 (537) | ||
| 50–66 years | 34.2 (694) | 21.2 (579) | 31.6 (98) | 26.0 (360) | ||
| ≥67 years | 31.8 (646) | 11.2 (306) | 19.4 (60) | 11.3 (156) | ||
| Time on the list of the GP | <0.001 | 0.739 | ||||
| <1 year | 9.4 (191) | 10.5 (288) | 8.4 (26) | 9.6 (133) | ||
| 1–2 years | 19.4 (392) | 24.3 (664) | 21.3 (66) | 23.3 (322) | ||
| 3–4 years | 14.5 (293) | 15.3 (419) | 16.1 (50) | 13.7 (189) | ||
| 5–10 years | 20.4 (414) | 20.9 (570) | 22.3 (69) | 22.3 (309) | ||
| ≥11 years | 36.3 (735) | 28.9 (790) | 31.9 (99) | 31.1 (431) | ||
| Number of consultations during past 24 months | 10.8±11.3 | 7.6±10.7 | <0.001 | 9.6±9.2 | 8.4±11.5 | 0.077 |
| Number of diagnosis codes during past 24 months | 13.8±13.5 | 11.3±14.1 | <0.001 | 12.6±10.7 | 12.2±14.9 | 0.611 |
| Number of unique diagnosis codes during past 24 months | 4.7±3.2 | 4.1±3.1 | <0.001 | 4.6±2.8 | 4.2±3.2 | 0.107 |
*Pearson χ2 tests for categorical variables and independent-samples t-tests for continuous variables. Data are n (%) or mean±SD values.
GP, general practitioner.