Name

ai_all

Label

Arousal Index

Description

Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours.

Calculation
ai_all = 60 * ( arrembp + arremop + arnrembp + arnremop ) / slpprdp
Units
events per hour
Type
numeric
Visit vs Arousal Index
N Mean StdDev Median Min Max Unknown Total
Visit 5 724 15.5 ± 10.0 13.1 2.3 75.7 11 735
Age at time of visit vs Arousal Index
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 649 15.5 ± 9.9 13.1 2.3 75.7 9 658
5-14 yrs old 63 7.4 ± 2.5 7.1 3.3 16.6 1 64
15-24 yrs old 111 11.1 ± 5.0 9.7 3.8 32.7 1 112
25-34 yrs old 62 15.7 ± 8.8 15.0 5.3 52.2 - 62
35-44 years 95 17.0 ± 9.7 15.5 4.6 75.7 3 98
45-54 years 145 15.5 ± 8.8 13.8 2.3 48.7 3 148
55-64 years 83 18.6 ± 11.4 16.2 4.5 64.9 1 84
65-74 years 57 20.8 ± 11.7 17.7 5.6 63.1 - 57
75-84 years 31 22.6 ± 14.2 19.0 5.5 54.7 - 31
85 years or older 2 29.8 ± 1.6 29.8 28.7 30.9 - 2
Sex vs Arousal Index
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 724 15.5 ± 10.0 13.1 2.3 75.7 11 735
Female 399 14.0 ± 8.0 12.2 3.3 54.7 7 406
Male 325 17.5 ± 11.7 14.4 2.3 75.7 4 329
Race vs Arousal Index
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 724 15.5 ± 10.0 13.1 2.3 75.7 11 735
White 300 15.3 ± 9.8 12.9 3.3 75.7 4 304
Black 402 16.0 ± 10.3 13.2 2.3 63.1 7 409
Other 22 11.4 ± 5.1 10.0 4.1 22.5 - 22