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Table 7 Multiple linear regression analysis of independent variables for physical, mental component summary and overall QOL scores in patients with CKD

From: Quality of life among patients with moderate to advanced chronic kidney disease in Ghana - a single centre study

Variable Beta coeff Standard error t 95% CI P value
Physical component Summary score Adjusted R2 = 0.18
 Low income −0.21 3.52 −3.18 −19.69–−4.62 0.002
 CKD stage 5 −0.07 3.97 −0.93 −11.53–4.13 0.352
 haemoglobin 0.24 0.67 3.13 0.77–3.4 0.002
 MCV 0.77 0.20 1.12 −0.17–0.61 0.264
 uraemia −0.13 3.33 −1.73 −12.31–0.81 0.209
Mental Component summary Score Adjusted R2 = 0.15
 Low income −0.20 1.94 −2.91 −9.47–−1.81 0.004
 CKD stage 5 −0.04 2.02 −0.41 −4.82–3.14 0.689
 haemoglobin 0.18 0.34 2.26 −0.10–1.43 0.025
 MCV 0.13 0.10 1.82 −0.02–0.38 0.070
 uraemia −0.09 1.70 −1.13 −5.27–1.44 0.261
 IV iron use 0.23 5.13 3.30 6.81–27.04 0.001
Overall QOL Score   Adjusted R2 = 0.17
 Low income −0.21 2.75 −3.16 −14.11–−3.27 0.002
 CKD stage 5 −0.07 2.86 −0.85 −8.05–3.22 0.398
 haemoglobin 0.24 0.48 3.02 0.50–2.40 0.003
 MCV 0.09 0.14 1.27 −0.10–0.46 0.205
 uraemia −0.11 2.39 −1.49 −8.28–1.16 0.138
  1. MCV mean corpuscular volume, CKD 5 chronic kidney disease with GFR < 15 ml/min/1.73 m2, IV intravenous, SD standard deviation, QOL quality of life, CI confident interval, uraemia serum urea> 20 mmol/L, coeff coefficient