Table 1.
Characteristics of patients with and without preoperative anxiety (n=8665)
| Characteristics | No preoperative anxiety (n=7221) | Preoperative anxiety (n=1444) | P | Test statistic |
|---|---|---|---|---|
| Male (%) | 316 (4.4) | 40 (2.8) | 0.005 | 7.9 |
| Age at surgery (years) | 55 (46-65) | 54 (45-64) | 0.028 | 2.2 |
| ASA score (%) | ||||
| 1 | 252 (3.5) | 56 (3.9) | 0.6 | 0.94 |
| 2 | 4299 (59.5) | 869 (60.2) | ||
| 3 | 2670 (37.0) | 519 (35.9) | ||
| Anesthesia type (%) | ||||
| General | 3434 (47.6) | 677 (46.9) | 0.6 | 0.22 |
| MAC | 3787 (52.4) | 767 (53.1) | ||
| Robotic-assisted procedure (%) | ||||
| No | 7117 (98.6) | 1427 (98.8) | 0.4 | 0.60 |
| Yes | 104 (1.4) | 17 (1.2) | ||
| Operating room time (min)s | 55 (35-80) | 56 (37-83) | 0.13 | -1.5 |
| Service (%) | ||||
| Breast | 4173 (57.8) | 824 (57.1) | 0.068 | 10.3 |
| Gastric mixed tumor | 149 (2.1) | 21 (1.5) | ||
| Gynecology | 947 (13.1) | 180 (12.5) | ||
| Head and neck | 191 (2.6) | 33 (2.3) | ||
| Plastics | 1719 (23.8) | 383 (26.5) | ||
| Urology | 42 (0.6) | 3 (0.2) | ||
| Preoperative or intraoperative midazolam use (%) | 5769 (79.9) | 1154 (79.9) | >0.9 | 0.0005 |
| Apfel score (%) | ||||
| 0 | 7 (<0.1) | 0 | 0.039 | 10.1 |
| 1 | 56 (0.8) | 9 (0.6) | ||
| 2 | 736 (10.2) | 119 (8.2) | ||
| 3 | 5127 (71.0) | 1023 (70.8) | ||
| 4 | 1295 (17.9) | 293 (20.3) | ||
| Surgery start time (n=8626) | 10:56 am (9:02 am-1:12 pm) | 10:47 am (8:48 am-12:56 pm) | 0.081 | 1.7 |
Data reported as frequency (%) or median (quartiles: Q1-Q3). Patient characteristics were compared between patients with and without preoperative anxiety using Chi-squared tests for categorical variables (Pearson Chi-squared test values reported) and Wilcoxon rank sum tests for continuous variables (Z statistic reported). ASA: American Society of Anesthesiologist, MAC: Monitored anesthesia care