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Table 2 Predictors for DXA parameters in the THA and TKA cohort using a multivariate regression model

From: Bone mineral density assessment by DXA in rheumatic patients with end-stage osteoarthritis undergoing total joint arthroplasty

  Operated side Contralateral non-operated side Lumbar spine
β T p β T p β T p
THA patients
 (Intercept)   - 4.226 0.001   - 2.243 0.046   - 2.415 0.028
 Age 0.017 0.100 0.922 - 0.262 - 1.542 0.151 0.194 0.948 0.357
 Sex 0.132 0.764 0.455 0.170 0.984 0.346 0.412 1.969 0.066
 BMI 0.667 3.807 0.001 0.665 3.459 0.005 0.385 1.857 0.082
 KL score 0.253 1.489 0.155 0.176 1.014 0.332 - 0.032 - 0.162 0.873
 Prednisolone dose - 0.177 - 1.974 0.298 - 0.439 - 2.538 0.028 0.088 0.440 0.666
R2 adjusted 0.446** 0.585** 0.265
TKA patients
 (Intercept)   0.954 0.356   0.289 0.776   - 0.112 0.912
 Age - 0.266 - 1.342 0.201 - 0.179 - 0.844 0.411 - 0.259 - 1.176 0.256
 Sex - 0.126 - 0.606 0.554 - 0.237 - 1.097 0.289 - 0.075 - 0.347 0.733
 BMI 0.252 1.284 0.220 0.306 1.478 0.159 0.421 1.955 0.067
 KL score - 0.597 - 3.093 0.008 - 0.467 - 2.351 0.032 - 0.250 - 1.196 0.248
 Prednisolone dose - 0.011 - 0.051 0.960 - 0.213 - 1.062 0.304 - 0.311 - 1.488 0.155
R2 adjusted 0.342* 0.223 0.098
  1. Bold indicates significant independent predictors (p < 0.05). Asterisks indicate significance in the overall ANOVA multiple regression prediction model (*p < 0.05,**p < 0.01). BMI Body mass index, KL Kellgren-Lawrence