Covariate, % (n) or median (IQR) | FICB (n=381) | No FICB (n=136) | P value |
Age, mean (SE) | 75.7 (0.5) | 76.3 (0.8) | 0.48 |
Female sex | 66.9% (255) | 60.7% (82) | 0.19 |
White race | 93.7% (357) | 91.2% (125) | 0.48 |
ISS >9 (other minor injury) | 28.4% (108) | 31.9% (43) | 0.44 |
Fall cause of injury | 96.1% (366) | 93.4% (127) | 0.20 |
ASA score ≥III | 65.9% (251) | 71.3% (97) | 0.25 |
Any comorbidity* | 80.1% (305) | 83.8% (114) | 0.34 |
Hypertension | 56.7% (216) | 58.1% (79) | 0.78 |
Diabetes | 16.5% (63) | 19.1% (26) | 0.49 |
Dependent | 17.3% (66) | 19.1% (26) | 0.64 |
COPD | 13.7% (52) | 13.9% (19) | 0.92 |
Smoker | 10.5% (40) | 11.0% (15) | 0.86 |
Anticoagulant | 16.5% (63) | 25.0% (34) | 0.03 |
Advanced directive | 11.6% (44) | 13.2% (18) | 0.60 |
Fracture type† | 0.08 | ||
Head or neck | 52.8% (200) | 62.7% (84) | |
Intertrochanteric | 44.3% (168) | 36.6% (49) | |
Subtrochanteric | 2.9% (11) | 0.7% (1) | |
Surgical information | |||
Hip replacement (vs repair) | 39.1% (149) | 39.7% (54) | 0.90 |
General anesthesia | 84.5% (322) | 91.9% (125) | 0.03 |
Delayed surgery >24 hours | 22.3% (85) | 19.9% (27) | 0.55 |
Hours to surgery, median (IQR) | 19.0 (11–23) | 16.8 (9–23) | 0.07 |
bold values denote statistical significance p<0.05.
*Individual comorbidities tabulated if they occurred in at least 10% of patients.
†Four patients with ‘other’ or ‘unspecified’; these are later coded as not head/neck.
ASA, American Society of Anesthesiologist; COPD, chronic obstructive pulmonary disease; FICB, fascia iliaca compartment block; ISS, injury severity score.