Clinical Practice and Epidemiology in Mental Health

Table 1 Pearson correlations between all items (PP items p1 to p6; NP items n1 to n6)

From: The factor structure of the twelve item General Health Questionnaire (GHQ-12): the result of negative phrasing?

	p2	p3	p4	p5	p6	n1	n2	n3	n4	n5	n6
p1	0.43	0.41	0.47	0.43	0.39	0.37	0.38	0.38	0.39	0.40	0.36
p2	-	0.49	0.43	0.40	0.38	0.27	0.25	0.34	0.33	0.38	0.39
p3	-	-	0.36	0.47	0.38	0.24	0.24	0.33	0.28	0.36	0.32
p4	-	-	-	0.50	0.41	0.32	0.37	0.40	0.39	0.38	0.35
p5	-	-	-	-	0.48	0.33	0.36	0.42	0.41	0.42	0.41
p6	-	-	-	-	-	0.39	0.40	0.42	0.51	0.48	0.49
n1	-	-	-	-	-	-	0.58	0.54	0.57	0.51	0.44
n2	-	-	-	-	-	-	-	0.60	0.60	0.53	0.44
n3	-	-	-	-	-	-	-	-	0.60	0.60	0.54
n4	-	-	-	-	-	-	-	-	-	0.69	0.58
n5	-	-	-	-	-	-	-	-	-	-	0.71

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