Risk Factors for Delayed Inpatient Functional Recovery after Total Knee Arthroplasty
Table 2
Sensitivity analyses on inpatient functional recovery.
Delayed functional recovery†
Functional recovery at day 1*
Length of hospital stay
OR (95-CI)
AUC (95%-CI)
Coefficient
Coefficient
Base model
Age
1.09 (1.04–1.15)
0.75 (0.65; 0.86)
0.02 (−0.01–0.05)
0.06
0.02 (0.01–0.03)
0.10
Sex
0.97 (0.41–2.31)
0.95 (0.24–1.65)
0.11 (−0.09–0.30)
BMI
1.15 (1.07–1.24)
0.07 (0.01–0.12)
0.03 (0.01–0.04)
Complementary model
+ Blood loss
1.00 (0.99–1.01)
0.76 (0.65; 0.86)
0.00 (0.00–0.01)
0.07
0.00 (−0.00-0.00)
0.11
+ Tourniquet time
1.00 (0.97–1.03)
0.77 (0.67; 0.87)
−0.00 (−0.03–0.02)
0.06
0.00 (−0.00–0.01)
0.10
+ Morphine use, yes
1.00 (0.31–3.20)
0.75 (0.65; 0.86)
−0.70 (−1.58–0.19)
0.08
0.08 (−0.16–0.33)
0.10
+ Experience, >20 y
0.31 (0.16–0.64)
0.76 (0.66; 0.86)
−0.54 (−1.26–0.17)
0.08
−0.17 (−0.36–0.27)
0.11
Delayed functional recovery was apparent if ILAS score >6 after ≥4 days, *ILAS score after day 1. BMI = body mass index, OR = odds ratio, and AUC = area under the curve.
