Name
ai_nrem
Label
Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography
Description

Total arousals in non-rapid eye movement sleep (NREM) per hours of non-rapid eye movement sleep (NREM)

Calculation
ai_nrem = 60 * ( arnrembp + arnremop ) / ( slpprdp - minremp )
Units
events per hour
Type
numeric
Visit number vs Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 8 456 22.4 ± 13.2 19.7 3.1 82.6 5 461
Age (categorical) vs Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 450 22.4 ± 13.1 19.7 3.1 82.6 5 455
75-84 years 321 21.1 ± 11.4 19.4 3.1 64.5 4 325
85 years or older 129 25.6 ± 16.1 21.2 4.0 82.6 1 130
Gender vs Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 456 22.4 ± 13.2 19.7 3.1 82.6 5 461
Female 456 22.4 ± 13.2 19.7 3.1 82.6 5 461