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 number vs Arousal Index
N Mean StdDev Median Min Max Unknown Total
Visit 8 456 20.7 ± 12.0 18.0 2.4 75.1 5 461
Age (categorical) vs Arousal Index
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 450 20.7 ± 11.8 18.0 2.4 75.1 5 455
75-84 years 321 19.6 ± 10.3 17.8 2.4 62.1 4 325
85 years or older 129 23.4 ± 14.7 19.1 3.4 75.1 1 130
Gender vs Arousal Index
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 456 20.7 ± 12.0 18.0 2.4 75.1 5 461
Female 456 20.7 ± 12.0 18.0 2.4 75.1 5 461