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Table 2 Characteristics of participants in development stage

From: Development and evaluation of CARIES-QC: a caries-specific measure of quality of life for children

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

  1. Deprivation quintile: 1= least deprived and 5= most deprived