Table 2.
Characteristics of participants in development stage
| Study stage | Gender | Mean (range) age (years) | Deprivation quintile | |||||
|---|---|---|---|---|---|---|---|---|
| Male | Female | 1 | 2 | 3 | 4 | 5 | ||
| Item generation (n = 20) | 11 | 9 | 9.55 (5.5–13.9) | 1 | 2 | 4 | 2 | 11 |
| Item reduction (n = 22) | 9 | 13 | 9.40 (4.8–15.7) | 3 | 1 | 4 | 2 | 12 |
| Questionnaire design (n = 10) | 7 | 3 | 9.9 (6.4–15.5) | 4 | 3 | 3 | 0 | 0 |
| Face validity only (n = 4) | 1 | 3 | 10.84 (8.8–11.96) | 2 | 2 | 0 | 0 | 0 |
| Face and content validity (n = 4) | 4 | 0 | 9.45 (6.45–12.5) | 0 | 1 | 0 | 0 | 3 |
| Content validity only (n = 21) | 8 | 13 | 8.24 (5.19–14.35) | 1 | 2 | 2 | 4 | 13 |
| Overall (n = 81) | 29 | 32 | 9.17 (4.82–15.72) | 11 | 11 | 13 | 8 | 46 |
Deprivation quintile: 1= least deprived and 5= most deprived