Table 3.

Confirmatory factor analysis of Jenkins Sleep Scale—correlation between observed and predicted estimates (R) along with coefficient of determination (R²)

Estimates	Variance			R	95% CI		R2
	Fitted	Predicted	Residual		Lower	Upper
Trouble falling asleep	1.63	0.71	0.92	0.66	0.66	0.67	0.44
Waking up but no trouble falling asleep again	2.83	1.29	1.55	0.67	0.67	0.68	0.45
Waking up and trouble falling asleep again	2.40	1.47	0.92	0.78	0.78	0.79	0.61
Waking up feeling tired	2.28	1.02	1.26	0.67	0.66	0.68	0.45
Overall							0.78