Visit number vs Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type II polysomnography

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Visit 8	461	74.3	± 13.2	77.2	27.9	98.7	-	461

Age (categorical) vs Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type II polysomnography

Visit 8

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	455	74.4	± 13.1	77.2	27.9	98.7	-	455
75-84 years	325	75.6	± 12.6	77.9	27.9	98.7	-	325
85 years or older	130	71.3	± 13.9	73.7	28.9	93.5	-	130

Gender vs Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type II polysomnography

Visit 8

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	461	74.3	± 13.2	77.2	27.9	98.7	-	461
Female	461	74.3	± 13.2	77.2	27.9	98.7	-	461

Study of Osteoporotic Fractures

Histogram