Table 3. Sleep Parameters (per night) for MPS III Participants Averaged over the Recording Period.

	Age (years)
Sleep variable	P1	P2	P3	P4	P5	P6	P7	P8	Control
	2	4	5	10	10	11	14	15	mean
Time in bed (min)	570.9	589.5	593.8	579.1	528.8	558.2	659.4	397.4	544.9
Night-time sleep (min)	507.2	504.5	396.6	497.3	464.9	484.0	532.8	190.2	479.0
Daytime sleep (min)	46.5	0	1.2	0	40.6	0	16.4	6.0	1.7
Sleep onset latency (min)	38.6	6.3	24.8	30.4	32.2	39.1	70.9	183.3	14.2
Sleep efficiency (%)	81.0	79.6	59.3	79.2	73.7	77.5	70.5	28.6	80.8
WASO (min)	63.7	85.0	197.2	81.8	63.9	74.2	126.6	207.2	75.1

WASO, wake after sleep onset.