Table 3.

Confirmatory factor analysis of the Jenkins Sleep Scale (JSS) score (n = 420)

Factor	Indicator	Estimate (Loading)	SE	Z	p
JSS	JSS-1	0.83	0.06	13.59	< 0.001
	JSS-2	0.69	0.07	10.29	< 0.001
	JSS-3	0.95	0.06	15.78	< 0.001
	JSS-4	0.89	0.08	11.83	< 0.001

Notes: The estimate represents factor loading using maximum likelihood extraction (MLE). Χ²(df), p = 385.59 (6), p = 0.02. The comparative fit index (CFI) = 0.99. The Tucker‒Lewis index (TLI) was 0.96. The Bentler–Bonett Nonnormed Fit Index (NNFI) = 0.96. The Bentler–Bonett normed fit index (NFI) was 0.98. The parsimony-normed fit index (PNFI) was 0.33. The pollen relative fit index (RFI) was 0.94. The increase in the Bollen Fit Index (IFI) was 0.99. The relative noncentrality index (RNI) = 0.99. Log-likelihood = -2624.24. Number of free parameters = 12. Akaike (AIC) = 5272.47. Bayesian (BIC) = 5320.95. Sample-size adjusted Bayesian (SSABIC) = 5282.87. Root mean square error of approximation (RMSEA) = 0.08. RMSEA 90% CI lower bound = 0.03. RMSEA 90% CI upper bound = 0.15. RMSEA p value = 0.14. The standardized root mean square residual (SRMR) was 0.02. Hoelter’s critical N (α = 0.05) = 329.5. Hoelter’s critical N (α = 0.01) = 505.98. Goodness-of-fit index (GFI) = 1. The McDonald fit index (MFI) was 0.99. The expected cross-validation index (ECVI) was 0.08. Kaiser–Meyer–Olkin (KMO) test = 0.79. Bartlett’s test of sphericity Χ²(df), p = 382.69 (6), p < 0.001