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Visit number vs Central Apnea Index (NREM): (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 8
461
0.3
± 3.7
0.0
0.0
77.6
-
461
Age (categorical) vs Central Apnea Index (NREM): (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 8
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
455
0.3
± 3.7
0.0
0.0
77.6
-
455
75-84 years
325
0.4
± 4.4
0.0
0.0
77.6
-
325
85 years or older
130
0.1
± 0.4
0.0
0.0
3.4
-
130
Gender vs Central Apnea Index (NREM): (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography