Table 1.
Baseline Characteristics Before Propensity Score Matching
| L(n=338) | M(n=212) | SMD | P | |
|---|---|---|---|---|
| Age(y) | 50.5±13.3 | 49.9±13.6 | 0.087 | 0.272 |
| Sex, n(%) | ||||
| Male | 170(50.3) | 103(48.6) | 0.034 | 0.756 |
| Female | 168(49.7) | 109(51.4) | ||
| BMI(kg/m2) | 24.8±4.7 | 24.3±4.8 | 0.137 | 0.176 |
| ASA, n(%) | ||||
| I | 21(6.2) | 26(12.3) | 0.139 | 0.031 |
| II | 317(93.8) | 186(87.7) | ||
| HBP, n(%) | 64(18.9) | 46(21.7) | 0.067 | 0.220 |
| DM, n(%) | 20(5.9) | 9(4.2) | 0.083 | 0.747 |
| Ward MAP(mmHg) | 96.8±8.8 | 96.6±8.9 | – | 0.742 |
| NI-MAP(mmHg) | 96.9±8.4 | 96.3±7.6 | – | 0.426 |
| Invasive MAP(mmHg) | 99.1±10.1 | 99.2±8.3 | – | 0.937 |
| Baseline MAP(mmHg) | 97.6±7.9 | 97.4±7.2 | 0.078 | 0.737 |
| Surgery Type, n(%) | ||||
| Orthopedics | 215(63.6) | 65(30.7) | 0.569 | 0.779 |
| Urology | 21(6.2) | 46(21.7) | ||
| Gynecology | 26(7.7) | 6(2.8) | ||
| Hepatobiliary surgery | 58(17.2) | 42(19.8) | ||
| Thyroid surgery | 18(5.3) | 53(25.0) | ||
| Infusion(mL) | 500(0,500) | 1000(1000,1000) | – | <0.001 |
| Hospitalization times | 1.5±1.4 | 1.4±0.8 | 0.061 | 0.603 |
| Admission time(h) | 14.4±2.9 | 15.1±3.3 | 0.310 | 0.111 |
Notes: Values are presented as mean ± SD, median (P25, P75) or number (percentage). Admission time, time of entering the operation room.
Abbreviations: ASA, American Society of Anesthesiologists; BMI, body mass index; HBP, Hypertension; DM, diabetes mellitus; MAP, mean arterial pressure; NI-MAP, non-invasive mean arterial pressure.