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Table 3 Binary logistic regression analysis to assess the association between preoperative factors and dissatisfaction and persistent pain after TKA

From: Mild knee osteoarthritis predicts dissatisfaction after total knee arthroplasty: a prospective study of 186 patients aged 65 years or less with 2-year follow-up

Variable Dissatisfaction Persistent pain during exercise Persistent pain at rest
OR 95% CI p OR 95% CI p OR 95% CI p
Gender
 Female 1    1    1   
 Male 1.64 0.68 – 3.96 0.268 0.80 0.41 – 1.56 0.526 1.06 0.39 – 2.89 0.903
Higher BMI 0.98 0.90 – 1.06 0.588 1.02 0.96 – 1.08 0.569 1.03 0.95 – 1.12 0.513
Older age 0.92 0.85 – 0.99 0.029 0.93 0.87 – 0.99 0.022 0.84 0.77 – 0.93 <0.001
At work 0.53 0.21 – 1.33 0.178 0.80 0.42 – 1.54 0.507 1.77 0.43 - 7.34 0.434
Alignment
 Varus 1    1    1   
 Valgus 0.86 0.23 – 3.19 0.818 1.01 0.41 – 2.50 0.976 1.95 0.56 – 6.82 0.296
KL-grade
 3-4 1    1    1   
 2 4.22 1.67 – 10.66 0.002 1.51 0.69 – 3.33 0.306 1.85 0.61 – 5.62 0.275
Comorbidities
 No 1    1    1   
 Yes 1.63 0.55 – 4.83 0.377 0.92 0.36 – 2.33 0.855 0.68 0.15 – 3.12 0.615