Measurement invariance across chronic conditions: a systematic review and an empirical investigation of the Health Education Impact Questionnaire (heiQ™)

Table 2 Fit-values for strict invariance models (SI) and partial invariance models (PI) among chronic conditions

Scale	Model	Chi²(df)	p	CFI	RMSEA
Positive and active engagement in life	SI	212.21 (99)	<0.001	0.868	0.079
Positive and active engagement in life	PI	121.99 (68)	<0.001	0.947	0.053
Health directed activites	SI	85.72 (49)	<0.001	0.975	0.052
Health directed activites	PI	69.16 (47)	0.019	0.985	0.041
Skill and technique acquisition	SI	62.966 (50)	0.103	0.986	0.030
Skill and technique acquisition	PI	45.08 (47)	0.552	1.000	0.000
Constructive attitudes and approaches	SI	164.04 (88)	<0.001	0.940	0.063
Constructive attitudes and approaches	PI	142.26 (72)	<0.001	0.952	0.059
Self-monitoring and insight	SI	434.91 (108)	<0.001	0.696	0.104
Self-monitoring and insight	PI	141.97 (92)	<0.001	0.953	0.044
Health service Navigation	SI	259.45 (76)	<0.001	0.870	0.095
Health service Navigation	PI	160.20 (72)	<0.001	0.941	0.066
Social integration and support	SI	155.52 (76)	<0.001	0.960	0.061
Social integration and support	PI	--	--	--	--
Emotional distress	SI	255.75 (108)	<0.001	0.944	0.070
	PI	208.14 (105)	<0.001	0.961	0.051

Notes: SI: Strict invariance model; PI: Partial invariance model (non-invariant parameters see Table 4).

ISSN: 1477-7525