Validation of actigraphy to assess circadian organization and sleep quality in patients with advanced lung cancer

Table 6 Correlation of Circadian Actigraphy Parameters and PSQI of NSCLC Patients

Actigraphy Parameters	Pittsburgh Sleep Quality Index
	Sleep Duration		Sleep Disturbance		Sleep Medicine Use		PSQI Daytime Dysfunction		Global Score
	Inpatients (n = 35)	Outpatients (n = 33)	Inpatients (n = 35)	Outpatients (n = 33)	Inpatients (n = 35)	Outpatients (n = 33)	Inpatients (n = 35)	Outpatients (n = 33)	Inpatients (n = 35)	Outpatients (n = 33)
*Wake Span*
Activity Mean					0.07	-0.58(0.003)	-0.25	-0.61(0.006)	-0.11	-0.48(0.014)
Sleep Minutes					0.39(0.05)	-0.36	0.09	0.54(0.017)	0.26	0.41(0.036)
Mean Wake Episode					0.05	-0.52(0.008)	-0.29	0.23	-0.11	-0.43(0.027)
Sleep Episodes					-0.12	0.40(0.047)	0.18	0.28	0.08	0.35(0.078)
Mean Sleep Episode					-0.41(0.035)	-0.08	-0.31	0.62(0.004)	0.18	0.26
*Sleep Span*
Wake Episodes			0.37	0.63 (0.005)	0.34 (0.09)	-0.23	0.25	0.55 (0.015)	-0.32	0.49 (0.01)
Sleep Latency			0.13	0.29	0.62 (< 0.001)	-0.38 (0.058)	0.11	-0.21	-0.04	0.26
Sleep Efficiency			-0.34	0.02	-0.35	0.31	0.02	0.01	0.12	0.22
Sleep Episodes			0.37	-0.63 (0.005)	041 (0.038)	-0.24	0.25	-0.57 (0.011)	-0.28	-0.49 (0.011)
*Circadian Parameters*
24 HR rhythm Mean						-0.45 (0.02)
Circadian Quotient								-0.42 (0.065)
Rhythm Quotient								-0.58 (0.007)
Day-Night Activity Balance				-0.61 (0.037)
Day-Night Sleep Balance		0.43 (0.027)			0.46 (0.018)			-0.62 (0.004)		-0.49 (0.01)
Night Day Long Sleep Balance		0.37 (0.063)		-0.42 (0.08)				-0.64 (0.003)		-0.52 (0.006)

^a Correlations are shown only for p-values < 0.05; NSCLC = non-small cell lung cancer