From: Ambulatory pulse oximetry monitoring in Japanese COPD outpatients not receiving oxygen therapy
Variable | Risk ratio | 95% CI | p |
---|---|---|---|
Age (years) | 1.04 | 0.97 – 1.10 | 0.26 |
Unadjusted Charlson Comorbidity Index | 0.93 | 0.57 – 1.51 | 0.76 |
Age-adjusted Charlson Comorbidity Index | 1.06 | 0.76 – 1.46 | 0.74 |
Pack/years | 1.00 | 0.98 – 1.01 | 0.69 |
Body mass index | 0.87 | 0.73 – 1.03 | 0.10 |
mMRC dyspnoea grade | 1.19 | 0.73 – 1.96 | 0.49 |
CAT score | 1.08 | 1.00 – 1.16 | 0.054 |
PaO2 | 0.97 | 0.92 – 1.03 | 0.35 |
PaCO2 | 0.95 | 0.84 – 1.08 | 0.45 |
FEV1 | 0.60 | 0.23 – 1.53 | 0.28 |
%FEV1 | 0.99 | 0.96 – 1.02 | 0.45 |
Daytime | |||
Proportion of SpO2 values < 90% (%) | 1.01 | 0.92 – 1.11 | 0.78 |
Mean heart rate | 1.02 | 0.97 – 1.07 | 0.42 |
Nighttime | |||
Proportion of SpO2 values < 90% | 0.98 | 0.92 – 1.03 | 0.41 |
3%ODI | 0.92 | 0.82 – 1.02 | 0.12 |
Mean heart rate | 1.01 | 0.95 – 1.07 | 0.71 |