Table 1.
Baseline characteristics of randomised participants
| Tourniquet inflated, n=27 |
Tourniquet not inflated, n=26 |
All participants, n=53 |
|
| Background information available (n, %) | 25 (93) | 24 (92) | 49 (93) |
| Study knee (left; n, %) | 14 (56) | 12 (50) | 26 (53) |
| Age at study registration (in years; mean, SD) | 69.4 (6.9) | 67.5 (6.8) | 69.4 (6.9) |
| Sex (female; n, %) | 11 (41) | 13 (50) | 24 (45) |
| BMI (kg/m2) | |||
| Mean, SD | 30.5 (5.5) | 30.6 (5.2) | 30.6 (5.3) |
| Missing | 1 (4) | 1 (4) | 2 (4) |
| Current smoker (yes; n, %) | 1 (4) | 0 | 1 (2) |
| Weekly alcohol consumption (n, %) | |||
| 0 | 9 (36) | 12 (50) | 21 (43) |
| 1–7 | 11 (44) | 7 (29) | 18 (37) |
| 8–14 | 3 (12) | 1 (4) | 4 (8) |
| 15–21 | 1 (4) | 2 (8) | 3 (6) |
| More than 21 | 1 (4) | 1 (4) | 2 (4) |
| Missing | 0 | 1 (4) | 1 (2) |
| Previous DVT, PE or VTE (yes; n, %) | 2 (8) | 1 (4) | 3 (6) |
| Previous cerebrovascular accident/stroke (n, %) | |||
| No | 25 (100) | 22 (92) | 47 (96) |
| Yes | 0 | 1 (4) | 1 (2) |
| Missing | 0 | 1 (4) | 1 (2) |
| Taking blood thinning medication (n, %) | |||
| No | 20 (80) | 17 (71) | 37 (76) |
| Yes | 5 (20) | 6 (25) | 11 (22) |
| Missing | 0 | 1 (4) | 1 (2) |
| Previous surgery/injury to study knee (yes, n, %) | 12 (48) | 12 (50) | 24 (49) |
| Hospital location (n, %) | |||
| University Hospital | 3 (11) | 4 (15) | 7 (13) |
| Rugby St Cross | 24 (89) | 22 (85) | 46 (87) |
| Baseline MRI lesion category (n, % per group) | |||
| None | 3 (12.5) | 3 (11.5) | 6 (11) |
| Less than 10 lesions | 8 (33.3) | 9 (34.6) | 17 (32) |
| 10–30 lesions | 6 (25.0) | 8 (30.8) | 14 (26) |
| Over 10 lesions with significant atrophy | 7 (29.2) | 4 (15.4) | 11 (21) |
| Over 30 lesions with significant atrophy | 0 | 2 (7.7) | 2 (4) |
| Missing | 3 (11%) | 0 | 3 (6) |
BMI, body mass index; DVT, deep vein thrombosis; PE, Pulmonary Embolism; SVT, symptomatic venous thromboembolism.