Table 1 Demographic characteristics
Variable | Included (n = 342) | Excluded (n = 58) | p value |
|---|---|---|---|
Sex (n, %) | 0.477 | ||
Female | 218 (63.7) | 40 (69.0) | |
Male | 124 (36.3) | 18 (31.0) | |
Age, years (n, %) | 0.008 | ||
≤ 60 | 111 (32.5) | 13 (22.4) | |
> 60 | 231 (67.5) | 45 (77.6) | |
Basic education (n, %) | 0.307 | ||
Secondary/comprehensive school (or less) | 267 (78.1) | 44 (75.9) | |
Senior high school | 52 (15.2) | 9 (15.5) | |
Junior college or above | 23 (6.7) | 5 (8.6) | |
Side (n, %) | 0.764 | ||
Right | 166 (48.5) | 27 (46.6) | |
Left | 176 (51.5) | 31 (53.4) | |
BMI (kg/m2 ± SD) | 27.02 ± 2.20 | 27.19 ± 2.14 | 0.100 |
ASA class (n, %) | 0.813 | ||
II | 160 (46.8) | 28 (48.3) | |
III | 182 (53.2) | 30 (51.7) | |
Postoperative analgesia type (n, %) | 0.386 | ||
Conventional analgesic | 39 (11.4) | 7 (12.1) | |
PCIA | 303 (88.6) | 51 (87.9) |