Clinical Practice and Epidemiology in Mental Health

Table 3 Variances (95%CL) for PP and NP items

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

PP items	Variance	95%CL for variance
p5	0.15	0.14, 0.16
p3	0.16	0.16, 0.17
p1	0.19	0.19, 0.20
p6	0.24	0.23, 0.25
p2	0.25	0.24, 0.27
p4	0.26	0.25, 0.27
NP items
n6	0.43	0.41, 0.45
n3	0.45	0.43, 0.47
n2	0.51	0.48, 0.53
n1	0.52	0.49, 0.54
n5	0.54	0.51, 0.56
n4	0.59	0.56, 0.61

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