Table 1 Baseline demographics and clinical characteristics
Characteristics | Group A (dexamethasone = 0 mg) | Group B (dexamethasone = 5 mg) | Group C (dexamethasone = 10 mg) | P value |
|---|---|---|---|---|
Demographic characteristics | ||||
 Age (years old) | 66.8 ± 8.5 | 68.0 ± 7.8 | 67.3 ± 9.3 | 0.189 |
 Gender (M/F) | 176/576 | 46/186 | 51/181 | 0.512 |
 Height (cm) | 158.7 ± 8.0 | 156.9 ± 7.7 | 157.7 ± 7.9 | 0.006* |
 Weight (kg) | 65.3 ± 10.1 | 63.6 ± 9.8 | 63.4 ± 10.9 | 0.012* |
 BMI (kg/m2) | 25.9 ± 3.3 | 25.8 ± 3.2 | 25.5 ± 3.6 | 0.241 |
 Smoker (Yes) | 115 (15.3%) | 24 (10.3%) | 27 (11.6%) | 0.097 |
 Alcohol user (Yes) | 134 (17.8%) | 33 (14.2%) | 29 (12.5%) | 0.107 |
 Procedure (Knee/Hip) | 474/278 | 164/68 | 150/82 | 0.102 |
 Operated sides (L/R) | 413/339 | 120/112 | 118/114 | 0.460 |
ASA classification | ||||
 I | 0 (0%) | 0 (0%) | 0 (0%) | 0.638 |
 II | 550 (73.1%) | 165 (71.1%) | 163 (70.3%) |  |
 III | 202 (26.9%) | 67 (28.9%) | 69 (29.7%) |  |
 IV | 0 (0%) | 0 (0%) | 0 (0%) |  |
Primary diagnosis | Â | Â | Â | 0.140 |
 OA | 514 (68.4%) | 178 (76.7%) | 155 (66.8%) |  |
 DDH | 131 (17.4%) | 27 (11.6%) | 43 (18.5%) |  |
 Dated fracture | 8 (1.1%) | 0 (0%) | 5 (2.2%) |  |
 ONFH | 86 (11.4%) | 24 (10.3%) | 24 (10.3%) |  |
 Traumatic OA | 13 (1.7%) | 3 (1.3%) | 5 (2.2%) |  |
Laboratory examinations | ||||
 Preoperative HbA1c (%) | 7.0 ± 1.1 | 6.9 ± 1.0 | 7.1 ± 1.1 | 0.145 |
 Preoperative FBG (mmol/L) | 7.2 ± 2.2 | 7.1 ± 1.9 | 7.3 ± 2.1 | 0.537 |
 Preoperative ESR (mm/h) | 26.5 ± 14.4 | 28.0 ± 13.2 | 27.0 ± 12.9 | 0.354 |
 Preoperative CRP (mg/L) | 3.7 ± 2.4 | 3.6 ± 2.6 | 3.5 ± 2.2 | 0.459 |
 Preoperative hemoglobin (g/L) | 128.1 ± 12.5 | 126.9 ± 14.6 | 125.9 ± 14.6 | 0.079 |
 Preoperative albumin (g/L) | 43.2 ± 3.5 | 43.5 ± 3.7 | 43.8 ± 3.7 | 0.078 |
Hospital expense (RMB) | 57,521.5 ± 13,600.4 | 57,988.8 ± 19,440.5 | 59,659.7 ± 14,971.7 | 0.171 |