Impact of COVID-19 on quality of life in Peruvian older adults: construct validity, reliability and invariance of the COV19—Impact on Quality of Life (COV19-QoL) measurement

Psicologia: Reflexão e Crítica

Psychology: Research and Review

Table 5 COV19-QoL invariance indices according to sex

	χ²	df	p	CFI	RMSEA	Δx²	ΔdF	ΔCFI	ΔRMSEA
M1	34.940	18	< .01	0.981	0.163	-	-	-	-
M2	42.443	23	< .01	0.980	0.148	6.9725	5	0.001	0.015
M3	59.566	40	< .01	0.983	0.104	18.8998	17	0.003	0.044
M4	118.820	41	< .01	0.979	0.114	6.7946	1	0.004	0.011

M1 Invariancia configuracional, M2 Invarianza métrica, M3 Invarianza escalar, M4 Equal means, χ2 Chi square, df degrees of freedom, CFI Comparative Fit Index, RMSEA Root Mean Square Error of Approximation, Δχ2 Differences in Chi square, Δdf Differences in degrees of freedom, ΔRMSEA Change in Root Mean Square Error of Approximation; ΔCFI Change in Comparative Fix Index