Skip to main content

Table 3 Multivariable-adjusted* predictors of use of non-steroidal anti-inflammatory drugs after primary total knee arthroplasty

From: Predictors of use of pain medications for persistent knee pain after primary Total Knee Arthroplasty: a cohort study using an institutional joint registry

  Multivariable-adjusted * analysis, 2-year follow-up Multivariable-adjusted * analysis, 5-year follow-up
  Odds ratio (95% CI) P-value Odds ratio (95% CI) P-value
Male gender (reference female) 0.52 (0.41, 0.64) < 0.001a 0.64 (0.48, 0.85) 0.002a
Age (reference ≤ 60 yrs)       
   > 60 to 70 yrs 0.92 (0.70, 1.20) 0.53 0.57 (0.41, 0.80) 0.001a
   > 70 to 80 yrs 0.72 (0.54, 0.95) 0.02a 0.56 (0.39, 0.79) 0.001a
> 80 yrs 0.52 (0.33, 0.82) 0.005a 1.00 (0.61, 1.64) 0.99
Body mass index (reference < 25 kg/m2)       
   25.0 to 29.9 1.20 (0.85, 1.70) 0.30 1.32 (0.87, 2.00) 0.20
   30.0 to 34.9 1.08 (0.76, 1.55) 0.66 1.12 (0.72, 1.74) 0.63
   35.0 to 39.9 1.44 (0.98, 2.13) 0.07 0.84 (0.50, 1.41) 0.50
   ≥ 40.0 1.64 (1.08, 2.48) 0.02a 1.22 (0.68, 2.20) 0.50
Deyo-Charlson index (5-point change) 1.06 (0.80, 1.41) 0.68 0.93 (0.67, 1.31) 0.69
Depression (reference no depression) 1.39 (1.04, 1.85) 0.03a 1.68 (1.12, 2.51) 0.01a
Anxiety (reference no anxiety) 1.11 (0.77, 1.61) 0.56 0.85 (0.49, 1.47) 0.56
  1. *Adjusted for American Society of Anesthesiologists (ASA) score, distance from the medical center, income, operative diagnosis and implant fixation in addition to all the variables in the table. aSignificant odds ratios and P-values; CI, confidence interval. Goodness of fit statistic calculated as quasi likelihood ratio with lower value indicating a better fit: 2 years, 3461.7; 5 years, 2098.4.