Table 3. Multi-variate adjusted analysis of significant outcomes in COPD patients undergoing 1–2 level PLFs.
| Dependent variables | Odds ratio (95% CI) | P value |
|---|---|---|
| Total operative time (min) | 0.003 | |
| 0–180 | Ref | |
| >180 | 0.83 (0.73–0.94) | |
| Length of stay (day) | 0.008 | |
| 0–3 | Ref | |
| >3 | 1.40 (1.32–1.48) | |
| Discharge destination | 0.002 | |
| Home | Ref | |
| Skilled care/rehab | 1.28 (1.09–1.51) | |
| Pneumonia | 2.53 (1.62–3.97) | <0.001 |
| 30-day readmission | 1.31 (1.03–1.65) | 0.025 |
Adjusted for age, race, BMI, co-morbidities (diabetes, smoking, dyspnea, functional status prior to surgery, CHF in 30 days before surgery, chronic steroid use, bleeding disorders, history of systemic sepsis), transfer status and ASA class. For discharge destination, pneumonia and 30-day re-admission, the outcome was also adjusted for total operative time and length of stay in addition to the before-mentioned variables. COPD, chronic obstructive pulmonary disease; PLF, posterior lumbar fusion; BMI, body mass index; CHF, congestive heart failure; CI, confidence interval.