Table 4. Adjusted multivariable associations with operating room time.
| Variable | Operating room time, Δ minutes (95% CI) | |
|---|---|---|
| OE | MIE | |
| Regionalization | 26.7 (5.2, 48.1) | −135.9 (−172.2, −99.7) |
| Age | −0.3 (−1.1, 0.4) | −0.7 (−2.0, 0.7) |
| Cancer stage | −3.6 (−7.4, 0.2) | −2.1 (−10.0, 5.7) |
| ASA class | 10.8 (−2.7, 24.3) | 11.9 (−18.1, 41.9) |
| MIE (versus OE) | – | – |
| Thoracic specialty | 19.6 (−27.3, 66.5) | 136.1 (44.3, 227.8) |
| Surgeon volume† | 6.0 (−21.5, 33.5) | −82.1 (−128.1, −36.1) |
| Facility volume† | −3.1 (−35.0, 28.8) | −17.6 (−82.4, 47.2) |
Hierarchical linear model analysis. †, ≥5 cases/year (versus <5). ASA, American Society of Anesthesiologists; MIE, minimally-invasive esophagectomy; OE, open esophagectomy.