Table 2.
Sample characteristics by diabetic status at preoperative assessment. Values are number (percentage) unless otherwise stated
| Total sample |
Nondiabetic patients |
Diabetic patients |
|
|---|---|---|---|
| n = 587 | n = 523 | n = 64 | |
| Trial intervention | |||
| Injection | 294 (50) | 263 (50) | 31 (48) |
| Standard care | 293 (50) | 260 (50) | 33 (52) |
| Primary total joint replacement | |||
| Hip | 300 (51) | 276 (53) | 24 (37) |
| Knee | 287 (49) | 247 (47) | 40 (63) |
| Age, mean (SD) | 68 (10) | 68 (10) | 70 (8) |
| Sex | |||
| Female | 325 (55) | 295 (56) | 30 (47) |
| Male | 262 (45) | 228 (44) | 34 (53) |
| BMI, mean (SD) | 31 (6) | 31 (6) | 34 (6) |
| ≤ 30 | 303 (52) | 282 (54) | 21 (33) |
| > 30 | 284 (48) | 241 (46) | 43 (67) |
| EQ VASa, n | 553 | 492 | 61 |
| mean (SD) | 66 (20) | 66 (20) | 64 (19) |
| EQ-5D Scoreb, n | 555 | 495 | 60 |
| mean (SD) | 0.42 (0.32) | 0.43 (0.32) | 0.37 (0.31) |
| FCIc (Number of comorbidities) | |||
| 192 (33) | 178 (34) | 14 (22) | |
| 2 | 168 (29) | 156 (30) | 12 (19) |
| 3 | 115 (20) | 102 (19) | 13 (20) |
| 112 (19) | 87 (17) | 25 (39) | |
| HADSd Total, n | 567 | 505 | 62 |
| mean (SD) | 13 (7) | 13 (7) | 13 (6) |
| WOMACe Pain, n | 587 | 523 | 64 |
| mean (SD) | 42 (17) | 43 (18) | 41 (15) |
| WOMAC Function, n | 558 | 499 | 59 |
| mean (SD) | 44 (18) | 44 (18) | 43 (16) |
| WOMAC Stiffness, n | 548 | 487 | 61 |
| mean (SD) | 44 (22) | 43 (22) | 44 (18) |
| WOMAC Total, n | 537 | 479 | 58 |
| mean (SD) | 44 (17) | 44 (17) | 44 (14) |
a
EQ visual analogue scale (0–100, worst to best health state).
b
EQ-5D 3L descriptive system.
c
Modified Functional Co-morbidity Index without BMI and diabetes diagnoses (categorized sum of the 16 remaining diagnoses).
d
Hospital Anxiety and Depression Scale with anxiety and depression scores combined (0–42, best to worst distress state).
e
Western Ontario and McMaster Universities Osteoarthritis Index (0–100 worst to best pain, function, stiffness or total score).