TABLE 2.

Demographic characteristics of concurrent validity samples.

Characteristic	Greece			Croatia			Italy			Latvia			Portugal			Romania
	T	P	S	T	P	S	T	P	S	T	P	S	T	P	S	T	P	S
Concurrent validity sample
n	1,600	732	206	1,112	853	128	2,256	1,382	749	1,792	1,636	732	1,677	1,326	836	1,772	2,087	979
Female	49.4	–	52.4	47.2	–	60.2	51.1	–	53.3	50.5	–	54.3	51.8	–	52.3	52.7	–	63.7
Grade
Kindergarten	39.1	–	–	37.8	–	–	30.9	–	–	29.2	–	–	20.5	–	–	33.9	–	–
Primary	39.4	–	–	31.8	–	–	32.1	–	–	36.9	–	–	34.0	–	–	26.6	–	–
Secondary	21.5	–	100.0	30.4	–	100.0	36.9	–	100.0	33.7	–	100.0	45.5	–	100.0	39.4	–	100.0
Predictive validity sample
n	356	105	47	386	242	51	589	256	148	922	783	353	538	391	227	497	427	55
Female	51.4	–	40.4	46.4	–	52.9	49.9	–	52.0	50.1	–	53.8	52.2		55.5	54.1	–	58.2
Grade
Kindergarten	56.5	–	–	38.9	–	–	36.0	–	–	30.3	–	–	17.5		–	40.2	–	–
Primary	30.6	–	–	24.1	–	–	29.7	–	–	38.5	–	–	32.7		–	21.9	–	–
Secondary	12.9	–	100.0	37.0	–	100.0	34.2	–	100.0	30.9	–	100.0	49.8		100.0	37.9	–	100.0

T, Teacher; P, Parent; S, Student.

Sample sizes reported post listwise deletion, so they reflect the demographics of samples used for analyses. Sample size for predictive validity sample reflects deletion of cases lost to attrition and non-control group participants. Some percentages do not sum to 100 due to rounding error and missing data.