Upper urinary tract stone disease in patients with poor performance status: active stone removal or conservative management?

Table 3 Univariate and multivariate analyses of associations between various parameters and overall survival

Variable	Univariate analysis			Multivariate analysis
	HR	95% CI	p value	HR	95% CI	p value
Age, year	1.09	1.05–1.15	<0.01	1.08	1.02–1.15	<0.01
Female (vs Male)	3.10	1.17–10.70	0.02	1.92	0.63–7.41	0.26
Charlson Comorbidity Index	1.28	0.98–1.64	0.06	1.36	1.10–1.68	<0.01
Coexisting acute pyelonephritis	1.53	0.58–5.26	0.42
Urinary drainage	0.94	0.38–2.83	0.90
Stone size, mm	0.99	0.94–1.03	0.52
Multiple stones	0.89	0.41–1.96	0.75
Stone removal	0.22	0.10–0.49	<0.01	0.43	0.16–1.09	0.07

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