Table 2. Mean actigraphy parameters (M±SD for the whole week, weekdays and weekends.

	Whole week			Weekdays			Weekends			Weekdays vs weekends
	Patients	Control	p	Patients	Control	p	Patients	Control	p	Patients	Control
Daily actigraphy (count/min)	201±49	201 ± 44	0.98	189 ± 56	195 ± 40	0.84	202 ± 54	218 ± 76	0.65	0.03*	0.34
Wake actigraphy (count/min)	266 ± 67	286 ± 61	0.55	250 ±73	277 ± 60	0.43	276 ± 76	308 ± 98	0.50	0.04*	0.34
sleep actigraphy (count/min)	63 ± 23	35 ± 23	0.03*	63 ± 34	32 ± 17	0.04*	47 ± 20	41 ± 42	0.76	0.23	0.42
wake/sleep actigraphy ratio	5 ± 2	12 ±8	0.04*	5 ± 2	12 ± 9	0.06	7 ± 3	12 ± 9	0.15	0.09	0.99
daily actigraphy index (%)	66 ± 8	62 ± 4	0.17	67 ± 8	61 ± 4	0.07	63 ± 7	61 ± 6	0.57	0.001*	0.95
wake actigraphy index (%)	85 ± 10	82 ± 4	0.17	87 ± 10	82 ± 4	0.27	81 ± 9	78 ± 8	0.49	0.01*	0.32
sleep actigraphy index (%)	26 ± 8	21 ± 6	0.35	27 ± 9	21 ± 6	0.18	24 ± 8	20 ± 7	0.25	0.32	0.48

The mean daily activity level over 24 h, during the habitual wake period and the habitual sleep period, were calculated. The ratio between sleep and wake period was thus estimated. The mean activity index (% of activity per hour) over 24 h, during the wake and sleep period, were also calculated. These parameters were calculated for the whole week, and separately for the weekends and the weekdays.

* indicates a significant difference with p<0.05.