Clinical Practice and Epidemiology in Mental Health

Table 4 Correlation matrix table showing the internal consistency of KCAHW questionnaire

From: Knowledge about childhood autism among health workers (KCAHW) questionnaire: description, reliability and internal consistency

Correlation Matrix
	D 1A	D 1B	D 2A	D 2B	D 3A	D 3B	D 4A	D 4B	T A	T B
D 1A	1.0000
D 1B	0.9679	1.0000
D 2A	0.3595	0.5230	1.0000
D 2B	0.9207	0.9207	0.6124	1.0000
D 3A	0.7926	0.7360	0.0000	0.7071	1.0000
D 3B	0.7604	0.6397	-0.1231	0.6784	0.9594	1.0000
D 4A	0.9916	0.9326	0.2408	0.8847	0.8341	0.8224	1.0000
D 4B	0.9207	0.9207	0.6124	1.0000	0.7071	0.6784	0.8847	1.0000
T A	0.9885	0.9577	0.3297	0.9231	0.8703	0.8292	0.9867	0.9231	1.0000
T B	0.9805	0.9632	0.4063	0.9520	0.8568	0.8090	0.9698	0.9520	0.9953	1.0000

Number of Cases = 50.0
Reliability Coefficients – 10 items
Alpha = 0.92 Standardized item alpha = 0.97
D – Domains, T – Total, A – First time administration of KCAHW questionnaire
B – Second time administration of KCAHW questionnaire

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