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

Table 3 Correlation of PSQI components and Actigraphy during the Usual Wake Period by Site^a

Actigraphy Parameters (Wake Period)	PSQI Sleep Medicine Use	PSQI Daytime Dysfunction	Global PSQI Score
*Inpatients* (n = 35)
Activity Mean	ns	ns	ns
Sleep Minutes	0.39(0.05)	ns	ns
% Sleep	-0.37(0.064)	ns	ns
Wake Episodes	ns	ns	ns
Mean Wake Episode	ns	ns	ns
Long Wake Episode	ns	-0.46(0.03)	ns
Sleep Episodes	ns	ns	ns
Mean Sleep Episode	-0.41(0.035)	ns	ns
Long Sleep Episode	ns	ns	ns
Longest Sleep Episode	-0.41(0.04)	ns	ns
*Outpatients* (n = 33)
Activity Mean	-0.58(0.003)	-0.61(0.006)	-0.48(0.014)
Sleep Minutes	ns	0.54(0.017)	0.41(0.036)
% Sleep	ns	0.45(0.053)	0.37(0.06)
Wake Episodes	0.40(0.047)	ns	ns
Mean Wake Episode	-0.52(0.008)	ns	-0.43(0.027)
Long Wake Episode	0.34(0.096)	ns	ns
Sleep Episodes	0.40(0.047)	ns	0.35(0.078)
Mean Sleep Episode	ns	0.62(0.004)	ns
Long Sleep Episode	ns	0.46(0.047)	0.43(0.029)
Longest Sleep Episode	ns	0.61(0.005)	0.45(0.02)

^a Correlations are shown only for p-values < 0.05; ns = not significant; p-values are in ( ).