Name
ai_nrem
Label
Arousal Index (NREM)
Description

Non-REM Arousal Index - total arousals in non-REM sleep per hours of non-REM sleep

Calculation
ai_nrem = 60 * ( arnrembp + arnremop ) / ( slpprdp - minremp )
Units
events per hour
Type
numeric
Tags
SHHS Visit Number vs Arousal Index (NREM)
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,642 20.0 ± 11.6 17.3 0.0 112.5 162 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,613 19.2 ± 11.1 16.7 1.9 83.8 1,467 4,080
CVD Outcomes - - - - - - - -
Age at SHHS1 vs Arousal Index (NREM)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 20.0 ± 11.6 17.3 0.0 112.5 162 5,804
35-44 years 336 15.6 ± 9.4 13.8 1.6 95.8 6 342
45-54 years 999 17.4 ± 10.3 15.7 0.0 103.9 18 1,017
55-64 years 1,734 19.7 ± 11.1 16.8 1.8 91.2 35 1,769
65-74 years 1,572 21.3 ± 11.9 18.8 1.6 112.5 45 1,617
75-84 years 907 22.3 ± 12.3 19.3 2.0 75.8 48 955
85 years or older 94 24.9 ± 15.4 21.6 5.3 77.6 10 104
Gender vs Arousal Index (NREM)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 20.0 ± 11.6 17.3 0.0 112.5 162 5,804
Male 2,691 22.4 ± 12.6 19.6 0.0 112.5 74 2,765
Female 2,951 17.8 ± 10.0 15.5 1.6 77.6 88 3,039
Gender vs Arousal Index (NREM)
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 19.2 ± 11.1 16.7 1.9 83.8 1,467 4,080
Male 1,200 21.5 ± 11.9 18.7 4.1 83.8 661 1,861
Female 1,413 17.2 ± 9.9 14.9 1.9 82.0 806 2,219
Race vs Arousal Index (NREM)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 20.0 ± 11.6 17.3 0.0 112.5 162 5,804
White 4,785 20.3 ± 11.5 17.6 1.6 112.5 122 4,907
Black 477 18.9 ± 12.7 15.7 0.0 103.9 38 515
Other 380 17.3 ± 10.3 15.3 3.7 79.0 2 382
Race vs Arousal Index (NREM)
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 19.2 ± 11.1 16.7 1.9 83.8 1,467 4,080
White 2,280 19.4 ± 11.2 17.0 1.9 83.8 1,307 3,587
Black 174 19.2 ± 11.5 15.5 3.3 57.0 82 256
Other 159 16.5 ± 9.4 14.5 3.6 56.6 78 237