Table 3.

Association between quality of life and dialysis withdrawal

Hazard ratios for dialysis withdrawal	Crude	Model 1 (+ age, gender, ethnicity)	Model 2 (+ comorbidity)
Mental component score SF-12 < 50.0*	1.41 (0.78–2.53) p = 0.254	1.91 (1.05–3.49) p = 0.034	1.81 (0.99–3.30) p = 0.053
Physical component score SF-12 < 37.0*	1.61 (0.89–2.91) p = 0.116	1.51 (0.83–2.74) p = 0.178	1.26 (0.69–2.30) p = 0.463

Model 1 includes both the exposure + age, gender and ethnicity

Model 2 includes both the variables from model 1 + additionally the DAVIES comorbidity score, which includes points for ischemic heart disease, heart failure, peripheral vascular disease, malignancy, diabetes, collagen vascular disease, COPD and others

^* The higher the score on the SF-12, the better the Quality of Life. A cut-off of 50 was used for the MCS and 37 for the PCS.