Table 1 Characteristics of the patients according to preoperative use of low-dose acetylsalicylic acid (LdAA)
LdAA | No LdAA | P value | |
|---|---|---|---|
(n = 118) | (n = 137) | ||
Age, mean (SD) | 84.0 (7.6) | 80.8 (9.5) | < 0.01 |
Women, n (%) | 82 (69.5) | 108 (78.8) | 0.11 |
Institutional residence, n (%) | 29 (24.6) | 31 (22.6) | 0.77 |
Type of surgery (fracture), n (%) | 0.07 | ||
Hemiarthroplasty (cervical) | 51 (43.2) | 43 (31.4)* | |
Fixation (subtrochanteric or pertrochanteric) | 67 (56.8) | 94 (68.6) | |
Time from admission to surgery (hrs)†, mean (SD) | 20.1 (10.7) | 19.2 (9.3) | 0.51 |
Type of anesthesia, n (%) | |||
Spinal | 113 (95.8) | 136 (99.3) | 0.1 |
General | 5 (4.2) | 1 (0.7) | 0.1 |
NSAID medication at fracture, n (%) | 6 (5.1) | 8 (5.8) | 1.00 |
Medical history, n (%) | |||
Cardiovascular disease | 72 (61) | 56 (41) | < 0.01 |
Cerebrovascular disease | 16 (13.6) | 3 (2.2) | < 0.01 |
Hypertension | 46 (39) | 33 (24.1) | 0.01 |
Diabetes | 17 (14.4) | 12 (8.8) | 0.17 |
Renal dysfunction (serum creatinine)‡ | 31 (26.3) | 15 (11.0) | < 0.01 |
Pulmonary disease | 8 (6.8) | 15 (10.9) | 0.28 |
Rheumatoid arthritis | 2 (1.7) | 8 (5.8) | 0.11 |
Other disease | 2 (1.7) | 2 (1.5) | 1.00 |
ASA score n (%) | 0.02 | ||
I | 7 (5.9) | 15 (10.9) | |
II | 54 (45.8) | 81 (59.1) | |
III | 52 (44.1) | 38 (27.7) | |
IV | 5 (4.2) | 3 (2.2) | |
Compression bandage, n (%) | 55 (47) | 59 (43) | 0.61 |