Name
ai_all
Label
Arousal Index: Arousals per hour of sleep from type II polysomnography
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
Sleep Heart Health Study (SHHS) Visit Number vs Arousal Index: Arousals per hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,642 19.2 ± 10.7 16.8 0.0 110.4 162 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,613 18.4 ± 10.2 16.2 2.6 81.4 1,467 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Arousal Index: Arousals per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.2 ± 10.7 16.8 0.0 110.4 162 5,804
35-44 years 336 15.3 ± 8.9 13.6 2.8 90.7 6 342
45-54 years 999 17.1 ± 9.6 15.5 0.0 99.4 18 1,017
55-64 years 1,734 19.1 ± 10.4 16.7 2.1 90.8 35 1,769
65-74 years 1,572 20.2 ± 10.8 17.9 2.5 110.4 45 1,617
75-84 years 907 20.9 ± 11.4 18.5 2.2 74.4 48 955
85 years or older 94 23.1 ± 14.0 20.0 5.5 65.7 10 104
Gender of the participant vs Arousal Index: Arousals per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.2 ± 10.7 16.8 0.0 110.4 162 5,804
Male 2,691 21.5 ± 11.6 18.9 0.0 110.4 74 2,765
Female 2,951 17.0 ± 9.2 15.1 2.1 74.7 88 3,039
Gender of the participant vs Arousal Index: Arousals per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 18.4 ± 10.2 16.2 2.6 81.4 1,467 4,080
Male 1,200 20.6 ± 10.9 18.5 4.0 81.4 661 1,861
Female 1,413 16.5 ± 9.0 14.6 2.6 80.6 806 2,219
Race of the participant vs Arousal Index: Arousals per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.2 ± 10.7 16.8 0.0 110.4 162 5,804
White 4,785 19.4 ± 10.6 17.1 2.1 110.4 122 4,907
Black 477 18.3 ± 11.8 15.7 0.0 99.4 38 515
Other 380 16.8 ± 9.5 14.8 4.2 78.0 2 382
Race of the participant vs Arousal Index: Arousals per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 18.4 ± 10.2 16.2 2.6 81.4 1,467 4,080
White 2,280 18.5 ± 10.2 16.4 2.6 81.4 1,307 3,587
Black 174 18.5 ± 10.6 15.3 4.7 57.0 82 256
Other 159 16.1 ± 8.9 14.1 3.6 61.8 78 237