Table 6.

Results of the measurement invariance of composite models (MICOM) procedure (age).

Construct	Step 1	Step 2				Step 3a					Step 3b
	Configural invariance	Compositional invariance				Equal variances					Mean original difference (young people–old people)		Equal means
		Original correlation	5%	Partial measurement invariance established	Variance original difference (young people–old people)		2.5%	97.5%	Equal			2.5%		97.5%	Equal
ATUa	Yes	1.000	0.999	Yes	–0.399		–0.298	0.307	No	–0.665		–0.398		0.537	No
BIUb	Yes	1.000	0.999	Yes	–0.520		–0.298	0.298	No	–0.590		–0.423		0.538	No
HBc	Yes	1.000	0.998	Yes	–0.461		–0.300	0.304	No	–0.624		–0.410		0.538	No
PEOUd	Yes	0.999	0.993	Yes	–0.324		–0.315	0.298	No	–0.432		–0.400		0.512	Yes
POHe	Yes	1.000	0.998	Yes	–0.470		–0.299	0.298	No	–0.239		–0.419		0.539	Yes
PUf	Yes	1.000	0.997	Yes	–0.606		–0.312	0.293	No	–0.360		–0.401		0.500	Yes

^aATU: attitude toward using.

^bBIU: behavioral intention to use.

^cHB: health benefits.

^dPEOU: perceived ease of use.

^ePOH: promotion of health.

^fPU: perceived usefulness.