Table 7. Descriptive statistics of individual modified frailty index variables (mFI) in the frailest population (patients with mFI ≥ 3) that experienced respiratory complications.
| mFI variable | Respiratory outcome | |
|---|---|---|
| Yes (%) | No (%) | |
| Hypertension requiring medication | 33.17% | 4.87% |
| Functional health status prior to surgery | 29.47% | 8.57% |
| Diabetes | 15.66% | 22.37% |
| CVA/Stroke with neurological deficit | 13.12% | 86.88% |
| History of severe COPD | 11.98% | 26.06% |
| Impaired sensorium | 10.87% | 27.17% |
| Previous cardiac surgery | 9.21% | 28.83% |
| Current pneumonia | 7.33% | 30.71% |
| Previous percutaneous coronary intervention | 6.93% | 31.1% |
| Congestive heart failure 30 days before surgery | 6.73% | 31.31% |
| History of myocardial infarction 6 months before surgery | 4.13% | 33.9% |
| History of revascularization/amputation for peripheral artery disease | 3.8% | 34.24% |
| CVA/Stroke with no neurological deficit | 3.40% | 34.64% |
| History of transient ischemic attacks | 2.95% | 35.08% |
| History of angina 1 month before surgery | 2.00% | 36.04% |
Abbreviations: COPD, chronic obstructive pulmonary disease; CVA, cerebrovascular accident; mFI, modified frailty index.