Table 4.

Multivariable model of sleep variables explaining bodily pain with stepwise selection in HF patients with and without insomnia

	Insomnia (N=86)
Variable	Coefficient ± Std. Err	F-value	P-value
Total Sleep Time – PSG (Per 1hr)	−0.52 ± 0.15	12.64	.0006
Sleep Quality – PSQI	−0.78 ± 0.32	5.83	.0180
Frequency of Sleep Medications	−0.22 ± 0.19	1.39	.2416
Frequency of Naps	−0.15 ± 0.10	2.06	.1554
	No Insomnia (N=84)
Variable	Coefficient ± Std. Err	F-value	P-value
Total Sleep Time – PSG (Per 1hr)	−0.21 ± 0.19	1.20	.2776
Sleep Quality – PSQI	−0.32 ± 0.41	0.62	.4352
Frequency of Sleep Medications	−0.85 ± 0.33	6.65	.0118
Frequency of Naps	−0.28 ± 0.11	6.61	.0120

Note. PSG; Polysomnography, PSQI: Pittsburgh Sleep Quality Index, Bodily Pain – higher score indicates less pain