| |
T1
|
T2
|
T3
|
T4
|
|---|
|
n
|
2,230
|
2,149
|
1,816c
|
1,881d
|
|
mean age (SD)
|
11.09 (0.56)
|
13.56 (0.53)
|
16.27 (0.73)
|
19.1 (0.60)
|
|
% girls
|
50.8
|
51
|
52.3
|
52.3
|
|
response rate (%)
|
76a
|
96.4b
|
81.4b
|
84.3b
|
-
a Of the 2,935 eligible children asked to participate at T1.
-
b Of the 2,230 included children at T1.
-
c Non-responders at T3 include 2 deceased, 7 who were physically or psychologically unable to participate, 4 who were detained or moved abroad, and 31 untraceable or unreachable participants. Other non-responders refused participation or did not return any information (n = 372).
-
d Non-responders at T4 include 5 deceased, 3 who were physically or psychologically unable to participate, and 1 detained participant, 16 untraceable and 43 unreachable participants, and 9 participants who moved abroad. Other non-responders refused participation or did not return any information (n = 272).
