Table 2.
PERIOPERATIVE VARIABLES in CEM-Matched Inpatient vs. Outpatient Cohorts.
| Inpatient | Outpatient | ||||
|---|---|---|---|---|---|
| PERIOPERATIVE VARIABLES | (n = 7774, 74.87%) | (n = 2610, 25.13%) | |||
| Operative Time (min) (Mean ± SD)a | 149.16 ± 80.627 | 115.12 ± 60.836 | <0.001# | ||
| Days from Admission to Operation | 0.39 ± 6.306 | 0.06 ± 1.563 | <0.001# | ||
| Total Length of Hospital Stay (Days) | 2.46 ± 6.775 | 1.10 ± 2.236 | <0.001# | ||
| Anesthesia Administered | – | ||||
| General | 7774 | 100.00% | 2610 | 100.00% | |
| Epidural/Spinal | 0 | 0.00% | 0 | 0.00% | |
| Local/Regional | 0 | 0.00% | 0 | 0.00% | |
| MAC/IV Sedation | 0 | 0.00% | 0 | 0.00% | |
| ASA Classification | 0.989 | ||||
| ASA < 3 | 4192 | 53.92% | 1407 | 53.91% | |
| ASA ≥ 3 | 3582 | 46.08% | 1203 | 46.09% | |
| Number of Levels | 1.000 | ||||
| 1 Level | 4224 | 54.33% | 1418 | 54.33% | |
| 2 Levels | 3103 | 39.92% | 1042 | 39.92% | |
| ≥3 Levels | 447 | 5.75% | 150 | 5.75% | |
| Extended Operative Time (75th Percentile) | <0.001 | ||||
| x < 171.0 min. | 5511 | 70.89% | 2276 | 87.20% | ∗ |
| x ≥ 171.0 min. | 2263 | 29.11% | 334 | 12.80% | ∗ |
∗ Significant with Bonferroni corrected comparison of proportions (p < 0.05).
# Significant on Mann-Whitney-U-Test.
CEM: Coarsened-Exact-Matching; MAC: Monitored Anesthesia Care; IV: Intravenous; ASA: American Society of Anesthesiologists.
a
Values expressed as Mean ± Standard Deviation (SD); all other values expressed as (%) and N.