Name

rdi4p

Label

Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation

Description

Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a >=4% oxygen desaturation to the total sleep time expressed in hours

Calculation
rdi4p = 60 * ( hrembp4 + hrop4 + hnrbp4 + hnrop4 + carbp4 + carop4 + canbp4 + canop4 + oarbp4 + oarop4 + oanbp4 + oanop4 ) / slpprdp
Units
events per hour
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,804 8.7 ± 12.4 4.2 0.0 148.8 - 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 10.5 ± 13.1 5.9 0.0 116.0 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 8.7 ± 12.4 4.2 0.0 148.8 - 5,804
35-44 years 342 5.9 ± 11.5 2.0 0.0 92.6 - 342
45-54 years 1,017 6.9 ± 12.2 2.4 0.0 115.7 - 1,017
55-64 years 1,769 8.6 ± 12.4 3.9 0.0 97.4 - 1,769
65-74 years 1,617 9.6 ± 12.8 5.5 0.0 148.8 - 1,617
75-84 years 955 9.8 ± 12.0 5.6 0.0 89.0 - 955
85 years or older 104 11.9 ± 13.4 7.3 0.0 70.4 - 104
Gender vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 8.7 ± 12.4 4.2 0.0 148.8 - 5,804
Male 2,765 11.4 ± 14.0 6.5 0.0 115.7 - 2,765
Female 3,039 6.2 ± 10.2 2.6 0.0 148.8 - 3,039
Gender vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 10.5 ± 13.1 5.9 0.0 116.0 1,429 4,080
Male 1,226 13.4 ± 14.7 8.3 0.0 116.0 635 1,861
Female 1,425 8.0 ± 10.9 4.4 0.0 92.1 794 2,219
Race vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 8.7 ± 12.4 4.2 0.0 148.8 - 5,804
White 4,907 8.7 ± 12.4 4.3 0.0 148.8 - 4,907
Black 515 9.2 ± 14.1 3.6 0.0 111.6 - 515
Other 382 7.3 ± 10.7 3.3 0.0 67.5 - 382
Race vs Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 10.5 ± 13.1 5.9 0.0 116.0 1,429 4,080
White 2,311 10.6 ± 13.2 6.0 0.0 116.0 1,276 3,587
Black 181 10.3 ± 12.7 5.3 0.0 65.2 75 256
Other 159 9.1 ± 12.3 5.5 0.0 76.2 78 237