Table 1.
Baseline characteristics of total hip and knee arthroplasty patients in nine hospitals
| Patient characteristics | Whole cohort (n = 186) | DRHs (n = 57) | TCHs (n = 129) | P-value |
|---|---|---|---|---|
| THA/TKA | 89 (47.8)/97 (52.2) | 29 (50.9)/28 (49.1) | 60 (46.5)/69 (53.5) | 0.6 |
| Female | 127 (68.3) | 36 (63.2) | 91 (70.5) | 0.3 |
| Severe systemic diseasea | 50 (26.9) | 10 (17.5) | 40 (31.0) | 0.06 |
| Ischemic heart disease | 15 (8.1) | 3 (5.3) | 12 (9.3) | 0.6 |
| Heart failure | 8 (4.3) | 3 (5.3) | 5 (3.9) | 0.7 |
| Age (years) | 62 (55–69) | 62 (55–69) | 63 (54–71) | 0.6 |
| Chronic malnutrition | None | |||
| BMI ≥ 40 kg/m2 | 24 (12.9) | 7 (12.3) | 17 (13.2) | 0.9 |
| Recent or current infection | 8 (4.3) | 4 (7.0) | 4 (3.1) | 0.3 |
| Severe/unbearable painb | 114 (62.0) | 30 (52.6) | 84 (66.1) | 0.08 |
| Multiple painful joints | 107 (58.2) | 29 (50.9) | 78 (61.4) | 0.2 |
| Dementia | None | |||
| Depression/anxiety | 7 (3.8) | 2 (3.5) | 5 (3.9) | 1.0 |
| Anaemiac | 40 (21.5) | 9 (15.8) | 31 (24.0) | 0.2 |
Data are n (%) or median (IQR)
aAmerican Society of Anesthesiologists Physical Status (ASA-PS) III
bFunctional pain in joint to be operated
cFemale Hgb < 12 g/dl and male Hgb < 13 g/dl
Please see the Abbreviations section for explanation of the acronyms and Supplementary data, Table S2 for definitions of patient characteristics