Table 1.
Patient characteristics.
| Factor | Before PS matching | After PS matching | ||||
|---|---|---|---|---|---|---|
| Pre-RSB | Post-RSB | SMD | Pre-RSB | Post-RSB | SMD | |
| Number of patients | 227 | 382 | 97 | 97 | ||
| Age, y | 47.4 (15.7) | 51.4 (17.4) | 0.25 | 50.8 (16.6) | 48.6 (16.6) | 0.14 |
| Male, N | 51 (22.5) | 137 (35.9) | 0.30 | 22 (22.7) | 25 (25.8) | 0.07 |
| BMI, kg/m2 | 22.6 (3.7) | 23.6 (4) | 0.26 | 22.8 (4.3) | 23.5 (3.6) | 0.17 |
| Emergency, N | 63 (27.8) | 57 (14.9) | 0.32 | 21 (21.6) | 19 (19.6) | 0.05 |
| Department, N | ||||||
| Gynecology | 116 (51.1) | 142 (37.2) | 0.26 | 43 (44.3) | 50 (51.5) | 0.16 |
| Surgery | 109 (48) | 208 (54.5) | 52 (53.6) | 46 (47.4) | ||
| Urology | 2 (0.9) | 32 (8.4) | 2 (2.1) | 1 (1) | ||
| Year, N | ||||||
| 2013 | 0 (0) | 4 (1) | 1.57 | 0 (0) | 0 (0) | 0.07 |
| 2014 | 0 (0) | 4 (1) | 0 (0) | 0 (0) | ||
| 2015 | 0 (0) | 49 (12.8) | 0 (0) | 0 (0) | ||
| 2016 | 3 (1.3) | 83 (21.7) | 2 (2.1) | 3 (3.1) | ||
| 2017 | 47 (20.7) | 167 (43.7) | 41 (42.3) | 42 (43.3) | ||
| 2018 | 177 (78.0) | 75 (19.6) | 54 (55.7) | 52 (53.6) | ||
| RSB | ||||||
| Type of local anesthetic, N | ||||||
| 0.2% Ropivacaine | 178 (78.4) | 293 (76.7) | 0.13 | 73 (75.3) | 70 (72.2) | <0.01 |
| 0.25% Ropivacaine | 10 (4.4) | 20 (5.2) | 5 (5.2) | 6 (6.2) | ||
| 0.3% Ropivacaine | 39 (17.2) | 66 (17.3) | 19 (19.6) | 21 (21.6) | ||
| Dosage of local anesthetic, mL | 38.6 (10) | 30.3 (12.3) | 0.74 | 38 (10.8) | 34.2 (11.5) | 0.34 |
| Type of anesthesia, N | 0.156 | 0.20 | ||||
| Sevoflurane, N | 86 (37.9) | 161 (42.1) | 41 (42.3) | 46 (47.4) | ||
| Desflurane, N | 101 (44.5) | 153 (40.1) | 44 (45.4) | 37 (38.1) | ||
| TIVA, N | 37 (16.3) | 67 (17.5) | 12 (12.4) | 13 (13.4) | ||
| Others, N | 3 (1.3) | 1 (0.3) | 0 (0.0) | 1 (1.0) | ||
| Intraoperative analgesic use | ||||||
| Fentanyl | ||||||
| Patients, N | 115 (50.7) | 213 (55.8) | 0.10 | 48 (49.5) | 53 (54.6) | 0.10 |
| Dosage, μg | 132 (155) | 160 (187) | 0.17 | 121 (149) | 178 (209) | 0.32 |
| Remifentanil, N | 201 (88.5) | 365 (95.5) | 0.26 | 78 (80.4) | 94 (96.9) | 0.54 |
| Acetaminophen, N | 112 (49.3) | 152 (39.8) | 0.19 | 49 (50.5) | 41 (42.3) | 0.17 |
| Flurbiprofen, N | 3 (1.3) | 20 (5.2) | 0.22 | 2 (2.1) | 5 (5.2) | 0.17 |
| Duration of surgery, min | 135 (72.2) | 125 (68.3) | 0.14 | 135 (72.2) | 125 (68.3) | 0.14 |
| Duration of anesthesia, min | 165 (56.3) | 204 (81.3) | 0.57 | 168 (59.3) | 197 (71.9) | 0.44 |
Data are expressed as means (standard deviation) or number of patients (percentage).
BMI = body mass index, PS = propensity score, RSB = rectus sheath block, SMD = standardized mean difference, TIVA = total intravenous anesthesia.