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Table 5 Subgroup Analyses of the time-trends in post-TKA moderate-severe ADL limitation and moderate-severe pain in 2002-05 compared to 1993-1995 by important patient characteristics

From: Are outcomes after total knee arthroplasty worsening over time? A time-trends study of activity limitation and pain outcomes

  Odds ratio (95% CI) P-value Odds ratio (95% CI) P-value
  Age <65 Age65
2- yr Overall Moderate-severe ADL limitation 1 0.70 (0.41, 6.05) 0.19 1.43 (1.06, 1.95) 0.021
2- yr Mod- Severe Pain 1 1.63 (0.77, 3.47) 0.20 1.81 (1.07, 3.07) 0.026
  No Psychological morbidity Psychological morbidity
2- yr Overall Moderate- severe ADL limitation 2 1.50 (1.12, 2.00) 0.006 0.74 (0.29, 1.93) 0.54
2-yr Mod- Severe Pain 2 1.61 (1.02, 2.53) 0.039 3.82 (0.87, 16.7) 0.076
  BMI <30 BMI30
2- yr Overall Moderate- severe ADL limitation 3 1.11 (0.75, 1.65) 0.60 1.36 (0.95, 1.95) 0.094
2- yr Mod- Severe Pain 3 1.44 (0.82, 2.53) 0.20 2.19 (1.11, 4.31) 0.023
  Deyo-Charlson index 0 Deyo-Charlson index 1 or higher
2- yr Overall Moderate- severe ADL limitation 4 1.48 (1.00, 2.20) 0.053 1.09 (0.76, 1.56) 0.62
2- yr Mod- Severe Pain 4 1.56 (0.88, 2.74) 0.125 2.16 (1.12, 4.15) 0.021
  1. Psychological comorbidity was defined as the presence of anxiety, depression or both.
  2. 1adjusted for age, sex, comorbidity, anxiety, depression, BMI, preoperative pain/function.
  3. 2adjusted for age, sex, comorbidity, BMI, preoperative pain/function (not adjusted for anxiety or depression, since the groups were stratified by its presence).
  4. 3adjusted for age, sex, comorbidity, anxiety, depression, BMI, preoperative pain/function (not adjusted for BMI, since the groups were stratified by BMI).
  5. 4adjusted for age, sex, anxiety, depression, BMI, preoperative pain/function (not adjusted for comorbidity, since the groups were stratified by Deyo-Charlson comorbidity score).
  6. Bold indicates significant odds ratios.