Table 4

Rates and univariate odds ratios for non-traceability and refusal and for self-completion of Kidscreen questionnaire


Non-traceability a
Refusal a
Child completion of KIDSCREEN


%
OR
(95% CI)
%
OR
(95% CI)
%
OR
(95% CI)

Child characteristics
Gender









     Male
13
1.0
-
23
1.0
-
59
1.0
-
     Female
12
0.9
(0.6 to 1.3)
26
1.2
(0.9 to 1.5)
64
1.2
(0.9 to 1.6)
Age in years









     7 and 8
7
1.0
-
27
1.0
-
57
1.0
-
     9
13
1.9
(1.0 to 3.5)
19
0.6
(0.4 to 1.0)
66
1.5
(1.0 to 2.3)
     10
12
1.7
(0.9 to 3.1)
19
0.6
(0.4 to 1.0)
56
1.0
(0.6 to 1.5)
     11
13
1.9
(1.0 to 3.4)
26
1.0
(0.6 to 1.5)
66
1.5
(0.9 to 2.3)
     12 and 13
17
2.5
(1.4 to 4.5)
30
1.2
(0.8 to 1.8)
61
1.2
(0.8 to 1.8)
Walking ability b









     Walks unaided
14
1.0
-
29
1.0
-
80
1.0
-
     Walks using aids
11
0.8
(0.5 to 1.3)
18
0.5
(0.4 to 0.8)
67
0.5
(0.3 to 0.8)
     Unable to walk
11
0.8
(0.5 to 1.2)
21
0.6
(0.4 to 0.9)
28
0.09
(0.07 to 0.14)
Seizures b









     No
12
1.0
-
25
1.0
-
74
1.0
-
     Yes
12
1.1
(0.7 to 1.6)
25
1.0
(0.7 to 1.4)
29
0.1
(0.1 to 0.2)
Vision problems b









     No
12
1.0
-
24
1.0
-
65
1.0
-
     Yes
11
0.8
(0.5 to 1.5)
27
1.2
(0.8 to 1.8)
7
0.03
(0.01 to 0.1)
Hearing problems b









     No
13
1.0
-
27
1.0
-
62
1.0
-
     Yes
9
0.7
(0.2 to 2.2)
19
0.6
(0.3 to 1.6)
22
0.2
(0.06 to 0.5)
IQ









     >70
-
-
-
-
-
-
94
1.0

     50 to 70
-
-
-
-
-
-
65
0.1
(0.1 to 0.2)
     <50
-
-
-
-
-
-
5
0.003
(0.002 to 0.007)
Centre characteristics
Method of approach









     Direct
13
1.0
-
24
1.0

-
-
-
     Indirect
12
0.9
(0.7 to 1.3)
25
1.1
(0.8 to 1.4)
-
-
-

a Excluding North West Germany, where children were not sampled from a population-based register

b For assessment of response, impairment at age 4–5 years was obtained from the register; for assessment of child completion, impairment was obtained from interview.

Dickinson et al. BMC Public Health 2006 6:273   doi:10.1186/1471-2458-6-273