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Table 2 Multiple linear regression models of the physical and mental component summary scores, using the norm-based scoring algorithm with orthogonal rotation, in patients choosing dialysis but not yet started on dialysis (n = 39), in patients started on dialysis (n = 34), and in patients choosing conservative care (n = 23)

From: Reanalysis of the physical and mental health summary scores of dialysis versus conservative care in older patients with advanced chronic kidney disease: a critical appraisal

A—Physical component summary scorea  B 95% CI for B Beta P value
Constant 33.17 28.93 to 37.42   
Female vs. male − 4.85 − 8.89 to − 0.81 − 0.24 0.02
Treatment pathway (conservative care as reference)
 Not yet started on dialysis vs. conservative care 6.61 1.79 to 11.43 0.34 <  0.01
 Started on dialysis vs. conservative care 2.20 − 2.79 to 7.20 0.11 0.38
B—Mental component summary scoreb  B 95% CI for B Beta P value
Constant 43.97 39.88 to 48.06   
Interviewer-administration vs. self-administration 13.44 9.07 to 17.80 0.56 < 0.001
Treatment pathway (conservative care as reference)
 Not yet started on dialysis vs. conservative care 6.45 1.48 to 11.41 0.28 0.01
 Started on dialysis vs. conservative care − 0.58 − 5.80 to 4.64 − 0.03 0.83
  1. CI confidence interval, vs. versus
  2. aPhysical Component Summary score model: R2 = 0.15, F(3,92) = 5.24, P = 0.002. Results were similar when additionally adjusted for age, Davies comorbidity score, and way of administration
  3. bMental component summary score model: R2 = 0.31, F(3,92) = 14.02, P < 0.001. Results were similar when additionally adjusted for age, sex, and Davies comorbidity score