Table 1. Factor analysis results and fit statistics.

Stage	Type	Model Description	χ2	DOF	RMSEA	RMSEA	90% CI	CFI	N
1	CFA	Patton et al. 1995 one factor (total score)	7466.59	405	0.106	0.104	0.108	0.639	1549
1	CFA	Patton et al. 1995 three factor (canonical model)	6249.95	402	0.097	0.095	0.099	0.701	1549
1	CFA	Patton et al. 1995 six factor (first order factors)	5622.44	390	0.093	0.092	0.098	0.732	1549
2	EFA	Seven factors, 30 items	1145.29	246	0.049	0.046	0.051	0.954	1549
3	EFA	Five factors, 25 items	984.49	185	0.053	0.050	0.056	0.949	1549
4	EFA	Five factors, 18 items	498.36	73	0.061	0.056	0.066	0.967	1549
5	EFA	Three factors, 14 items	570.84	52	0.080	0.074	0.086	0.955	1549
6	CFA	Three factors, 14 items, simple structure	884.75	74	0.084	0.079	0.089	0.930	1549
6	CFA	Three factors, 13 items, simple structure	753.77	62	0.085	0.080	0.090	0.938	1549
6	CFA	Final model, three factors, 13 items, 3 error covariances	371.90	59	0.059	0.053	0.064	0.972	1549
7	CFA	Sample 2, replication of final model	262.44	59	0.072	0.064	0.081	0.968	657
7	CFA	Sample 2, Patton et al. 1995 three factor (canonical model)	2863.76	402	0.096	0.093	0.100	0.743	657
7	CFA	Sample 3, replication of final model	166.04	59	0.080	0.066	0.094	0.971	285
7	CFA	Sample 3, Patton et al. 1995 three factor (canonical model)	1659.31	402	0.105	0.100	0.110	0.779	285

Note. DOF = degrees of freedom; RMSEA = root mean square error of approximation; CI = confidence interval; CFI = comparative fit index; CFA = confirmatory Factor Analysis; EFA = exploratory factor analysis.