Construct Validity of the Holistic Complementary and Alternative Medicines Questionnaire (HCAMQ)—An Investigation Using Modern Psychometric Approaches

Table 4

Holistic health beliefs subscale rasch analysis results.

Analysis number	Item fit residual		Person fit residual		𝜒^2 interaction		PSI	Unidimensionality independent 𝑡-test (%) (95% CI)
	Mean	S.D.	Mean	S.D.	Value (df)	𝑃
1	−0.327	1.401	−0.315	0.768	23.77 (10)	0.008	0.69	10.48 (7.5 to 13.4)
2	0.011	1.437	−0.321	0.968	22.25 (10)	0.014	0.69	2.86 (−0.1 to 5.5)
3	−0.242	1.230	−0.320	0.922	24.88 (10)	0.006	0.66	2.86 (−0.1 to 5.5)
4	−1.428	0.974	−0.451	0.555	20.45 (5)	0.001	0.52	0 (−3.8 to 3.8)
5^a	0.492	1.035	−0.293	1.031	20.46 (10)	0.025	0.69	2.38 (−0.6 to 5.3)
6^b	0.357	0.431	−0.294	0.957	8.44 (8)	0.392	0.69	1.56 (−1.5 to 4.6)

^aAll items have been satisfactorily rescored so that thresholds are ordered; ^bResults after the removal of item 7.