Likelihood of a fecal occult blood test uptake among older adults: comparisons between health professionals and healthcare volunteers based on the health belief model

Table 6 Comparisons of nested models with constrained parameters

Model		χ²	df	CFI	Nested models	△χ²	△df	p
1	Baseline: unconstrained	844.49	454	.95
2	Factor loadings constrained equal	860.54	466	.95	2–1	16.06	12	.189
3	Factor loadings, factor correlations constrained equal	879.45	479	.94	3–2	18.90	13	.126
4	Factor loading, factor correlations, measurement error constrained equal	896.61	495	.94	4–3	17.17	16	.375
5	Factor loading, factor correlations, measurement error, structural coefficients constrained equal	920.79	510	.94	5–4	24.18	15	.062
6a	Susceptibility → Likelihood of an FOBT uptake	896.61	496	.94	6a-4	.00	1	.967
6b	Severity → Likelihood of an FOBT uptake	897.82	496	.94	6b-4	1.20	1	.272
6c	Benefits → Likelihood of an FOBT uptake	896.61	496	.94	6c-4	.00	1	.988
6d	Barriers → Likelihood of an FOBT uptake	900.95	496	.94	6d-4	4.34	1	.037
6e	Cues to action → Likelihood of an FOBT uptake	896.75	496	.94	6e-4	.14	1	.713
6f	Self-efficacy → Likelihood of an FOBT uptake	905.18	496	.94	6f-4	8.57	1	.003
6 g	Susceptibility → Cues to action	896.61	496	.94	6 g-4	.00	1	.960
6 h	Severity → Cues to action	896.73	496	.94	6 h-4	.12	1	.733
6i	Benefits → Cues to action	900.04	496	.94	6i-4	3.43	1	.064
6j	Barriers → Cues to action	898.26	496	.94	6j-4	1.65	1	.199
6 k	Susceptibility → Self-efficacy	896.80	496	.94	6 k-4	.19	1	.664
6 l	Severity → Self-efficacy	898.31	496	.94	6 l-4	1.70	1	.192
6 m	Benefits → Self-efficacy	896.81	496	.94	6 m-4	.20	1	.654
6n	Barriers → Self-efficacy	898.61	496	.94	6n-4	2.00	1	.158
6o	Gender → Likelihood of an FOBT uptake	896.64	496	.94	6o-4	.03	1	.856

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