Table 1.

Odds ratios of mortality in patients with COPD – univariate analyses of different variables used

OR (95%CI)	OR (95%CI)
Heart failure	7.06 (3.88–12.84)
Age	1.13 (1.11–1.14)
Male sex	1.78 (1.38–2.30)
RUB 4	2.03 (1.48–2.78)
RUB 5	4.78 (2.61–8.74)