cai4p oai4p
Name
cai4pa
Label
Central Apnea index 4% oxygen desaturation or arousal
Description

Central Apnea Index with Arousal at 4% oxygen desaturation [(Total number of central apneas associated with arousals or >= 4% oxygen desaturation) / (hours of sleep)]

Calculation
cai4pa = 60 * ( carba4 + caroa4 + canba4 + canoa4 ) / slpprdp
Units
events per hour
Type
numeric
Tags
cai4pa
SHHS Visit Number vs Central Apnea index 4% oxygen desaturation or arousal
N Mean StdDev Median Min Max Unknown Total
Visit 1 4,290 0.4 ± 2.0 0.0 0.0 42.1 1,514 5,804
Visit 2 2,613 0.6 ± 2.6 0.0 0.0 39.0 1,467 4,080
CVD Outcomes - - - - - - 5,042 5,042
Age at SHHS1 vs Central Apnea index 4% oxygen desaturation or arousal
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,290 0.4 ± 2.0 0.0 0.0 42.1 1,514 5,804
39.0 to 55.0 years 1,125 0.2 ± 1.2 0.0 0.0 23.9 326 1,451
55.0 to 63.0 years 1,064 0.3 ± 1.6 0.0 0.0 31.1 387 1,451
63.0 to 72.0 years 1,036 0.5 ± 2.1 0.0 0.0 31.0 415 1,451
72.0 to 100.0 years 1,065 0.7 ± 2.8 0.0 0.0 42.1 386 1,451
Gender vs Central Apnea index 4% oxygen desaturation or arousal
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,290 0.4 ± 2.0 0.0 0.0 42.1 1,514 5,804
Female 2,208 0.1 ± 0.9 0.0 0.0 25.7 831 3,039
Male 2,082 0.7 ± 2.7 0.0 0.0 42.1 683 2,765
Gender vs Central Apnea index 4% oxygen desaturation or arousal
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 0.6 ± 2.6 0.0 0.0 39.0 1,467 4,080
Female 1,413 0.3 ± 1.7 0.0 0.0 36.1 806 2,219
Male 1,200 1.0 ± 3.4 0.0 0.0 39.0 661 1,861
Race vs Central Apnea index 4% oxygen desaturation or arousal
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,290 0.4 ± 2.0 0.0 0.0 42.1 1,514 5,804
white 3,613 0.5 ± 2.2 0.0 0.0 42.1 1,294 4,907
black 370 0.3 ± 1.1 0.0 0.0 12.3 145 515
native amer/alaskan 9 0.1 ± 0.3 0.0 0.0 0.8 2 11
asian/pacific islander 70 0.1 ± 0.4 0.0 0.0 2.2 18 88
hispanic/mex. amer 225 0.2 ± 1.2 0.0 0.0 18.0 55 280
other 3 0.0 ± 0.0 0.0 0.0 0.0 - 3
Race vs Central Apnea index 4% oxygen desaturation or arousal
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,613 0.6 ± 2.6 0.0 0.0 39.0 1,467 4,080
white 2,280 0.6 ± 2.6 0.0 0.0 39.0 1,307 3,587
black 174 0.7 ± 3.3 0.0 0.0 36.1 82 256
native amer/alaskan 3 0.1 ± 0.2 0.0 0.0 0.4 5 8
asian/pacific islander 34 0.08 ± 0.2 0.0 0.0 0.9 14 48
hispanic/mex. amer 121 0.4 ± 1.4 0.0 0.0 11.9 59 180
other 1 0.0 - 0.0 0.0 0.0 - 1