Table 3.

Multivariate Cox proportional hazard regression analysis for prediction of (1) cancer-specific survival, (2) overall survival, (3) progression-free survival and (4) recurrence-free survival in T1HG patients > 80 years

	Multivariate analysis
	HR	95% CI	p
CSS
BCG induction therapy	0.234	0.06–0.87	0.030
No BCG therapy	Reference
Charlson comorbidity index	1.711	1.04–2.82	0.035
Haemoglobin	0.962	0.96–0.93	0.014
No. of tumours > 3	3.173	1.00–10.09	0.050
No. of tumours ≤ 3	Reference
OS
Multiple tumours	2.979	1.32–6.75	0.009
Single tumour	Reference
Charlson comorbidity index	1.380	0.97–1.96	0.074
Haemoglobin	0.964	0.94–0.98	0.0004
PFS
Tumour size ≥ 3 cm	2.387	1.03–5.53	0.042
Tumour size < 3 cm	Reference
Charlson comorbidity index	1.579	1.09–2.28	0.015
RFS
BCG—number of courses	0.776	0.61–0.99	0.038
reTURBT
Not performed	3.720	1.52–9.09	0.004
Residual tumour	2.829	6.54–1.23	0.015
No residual tumour	Reference

HR hazard ratio, CI confidence interval, reTURBT restaging transurethral resection of bladder tumour