Table 1 Characteristics of development and validation samples
N development sample (%) | N validation sample (%) | ||
|---|---|---|---|
Eligible (invited) | Children | 444 | 385 |
Kindergartens | 9 | 6 | |
Teachers | 60 | 75 | |
Participating | Children with parental consent | 225 (51) | 209 (54) |
Kindergartens | 9 (100) | 6 (100) | |
Teachers | 60 (100) | 33(44) | |
Cases excluded upon reasons | 34a (15) | 25b (12) | |
Cases in dataset | 191 (43) | 184 (48) | |
mean age (range; SD) | 4.27 (3 to 6; 1.05) | 4.25 (3 to 6; 0.94) | |
n 3 years | 58 (30) | 46 (25) | |
n 4 years | 60 (31) | 65 (35) | |
n 5 years | 43 (23) | 55 (30) | |
n 6 years | 30 (16) | 18 (10) | |
Gender (female) | 49% | 51% | |
German second language | 18% | 7% | |
SES low/middle/high | 2,6/49,2/40,3% | - |