Table 3.

Model 2 - Predicting nighttime sleep complaint and daytime sleep related consequences with demographic, clinical measures and attitudes/beliefs about sleep and pain

	Nighttime Sleep Complaints				Daytime Sleep-Related Consequences
		Standardized β	Unstandardized b (SE)	p		Standardized β	Unstandardized b (SE)	p
ISI	Sex	.083	.628 (.354)	.077	Fatigue	.498	.223 (.020)	.000
	Education	−.159	−.274 (.081)	.001	Depression	.053	.026 (.022)	.244
	Fatigue	.315	.179 (.029)	<.001	Pain	.064	.102(.070)	.149
	Sleep beliefs	.130	.025 (.009)	.010	Sleep beliefs	.206	.030 (.006)	<.001
	Pain beliefs	.135	.045 (.017)	.009	Pain beliefs	.089	.023 (.012)	.057
	Total R2 = .222; F = 21.334 (p = < .001)				Total R2 = .458; F = 61.113 (p = < .001)
PSQI		Standardized β	Unstandardized b (SE)	p		Standardized β	Unstandardized b (SE)	p
	Fatigue	.220	.029 (.007)	<.001	Fatigue	.292	.032 (.006)	<.001
	Sleep beliefs	.187	.008 (.002)	<.001	Depression	.129	.016 (.007)	.020
	Pain beliefs	.133	.010 (.004)	.013	Sleep beliefs	.080	.003 (.002)	.123
	Total R2 = .152; F = 22.308 (p = < .001)				Pain beliefs	.112	.007 (.003)	.037
					Total R2 = .199; F = 23.107 (p = < .001)

All variables entered in each model are reported. Variables that were not significant are shaded.

Insomnia Severity Index (ISI)

Pittsburgh Sleep Quality Index (PSQI)

Fatigue: Flinders Fatigue Scale – revised, excluding the sleep item (FFS)

Pain: Graded Chronic Pain Scale (GCPS)

Depression: Geriatric Depression Scale (GDS)

Sleep belief: Dysfunctional Beliefs About Sleep (DBAS)

Pain belief: Pain Catastrophizing (PCS)