Table 3.

Number of Questionnaires Delivered to and Recovered from Teachers, Classification According to Parent’s and Teachers’ Reports, and Inter-Rater Agreement, by School Grade

		Parent’s Classification (n)		Teachers’ Classification (n)	Agreemb n (%)	κ	[95% C.I.]
Grade	Criterion A	Delivered to Teachers	Recovereda from Teachers
G1	ADHD	192	136	99	75 (55)	0.40	[0.30, 0.50]
	Non-ADHD	192	158	195	134 (84)
	Total	384	294	294
G2	ADHD	208	138	73	52 (37)	0.22	[0.12, 0.32]
	Non-ADHD	208	139	204	118 (85)
	Total	416	277	277
G3	ADHD	144	111	62	47 (42)	0.28	[0.16, 0.39]
	Non-ADHD	144	107	156	92 (85)
	Total	288	218	218
Total	ADHD	544	385	234	174 (45)	0.30	[0.24, 0.36]
	Non-ADHD	544	404	555	344 (85)
	Total	1088	789	789	518 (65)

Notes: ^aComplete questionnaires recovered (incomplete questionnaires were excluded). ^bAgreement between teachers and parents in the recovered questionnaires (n=789). In each row 100% is the number reported by the parents.

Abbreviations: G1, school grades 1–2; G2, school grades 3–4; G3, school grades 5–6; κ, inter-rater reliability coefficient.