Table 1 |
||
|
Response rates and reasons for non-response |
||
|
N |
% |
|
|
|
||
|
Total sample size |
28 299 |
|
|
Undeliverable survey contacts |
1512 |
5.3 |
|
Address unknown |
49.0 |
|
|
Moved to unknown place |
20.7 |
|
|
Language problems |
18.7 |
|
|
Main residence outside PSU |
11.5 |
|
|
Deceased |
0.1 |
|
|
Target population |
26 787 |
|
|
|
||
|
NONRESPONSE |
N |
% |
|
|
||
|
Non-responders |
9146 |
|
|
No-shows, cancellations |
6.0 |
|
|
Withdrawn (child scared to participate) |
5.7 |
|
|
Not interested (healthy child) |
4.2 |
|
|
Refused |
3.5 |
|
|
No time |
3.2 |
|
|
Unable to reach |
2.6 |
|
|
No suitable appointment |
2.0 |
|
|
Child needs continuous medical care |
1.3 |
|
|
Too much effort; intolerable for child |
1.1 |
|
|
Not a place of residence |
0.8 |
|
|
Health problems |
0.5 |
|
|
Other reasons |
2.5 |
|
|
|
||
|
STUDY PARTICIPANTS, RESPONSE |
N |
% |
|
|
||
|
Total study population |
17 641 |
66.6 |
|
Gender |
||
|
Girls |
8656 |
67 |
|
Boys |
8985 |
66 |
|
Age groups (years) |
||
|
0–2 |
2805 |
65 |
|
3–6 |
3875 |
66 |
|
7–10 |
4148 |
70 |
|
11–13 |
3076 |
69 |
|
14–17 |
3737 |
63 |
|
Citizenship |
||
|
Non-German |
1479 |
51 |
|
German |
16 162 |
68 |
|
Region of residence |
||
|
Western Germany |
11 741 |
65 |
|
Eastern Germany |
5362 |
70 |
|
Berlin |
538 |
61 |
|
|
||
|
Kurth et al. BMC Public Health 2008 8:196 doi:10.1186/1471-2458-8-196 |
||
