Table 2. Mortality in CKD patients with and without COVID-19 disease.

	All CKD patients		No COVID-19 disease		COVID-19 disease
	Number of deaths	Crude mortality rate	Number of deaths	Crude mortality rate	Number of deaths	Crude mortality rate
Overall population	301/4716	6.38%	215/4523	4.75%	86/193	44.56%
CKD-EPI stage
1–2	3/340	0.88%	2/336	0.60%	1/4	25.00%
3a	30/1014	2.96%	23/989	2.33%	7/25	28.00%
3b	109/1845	5.91%	80/1772	4.51%	29/73	39.73%
4	138/1340	10.30%	92/1256	7.32%	46/84	54.76%
5	21/176	11.93%	18/169	10.65%	3/7	42.86%
Males	175/3086	5.67%	121/2963	4.08%	54/123	43.90%
Females	126/1630	7.73%	94/1560	6.03%	32/70	45.71%
Province
Ravenna	53/852	6.22%	43/830	5.18%	10/22	45.45%
Forlì-Cesena	121/1827	6.62%	92/1765	5.21%	29/62	46.77%
Rimini	127/2037	6.23%	80/1928	4.15%	47/109	43.12%