Table 1.

Baseline characteristics of patients in the study

Characteristics	Total cohort		Patients without COVID-19		Patients with COVID-19		P-valuea	Unvaccinated		Incomplete vaccination		Complete vaccination		P-valueb
	N	%	N	%	N	%		N	%	N	%	N	%
Total	12,301	100%	10,939	88.93%	1362	11.07%	-	1196	9.73%	490	3.98%	10,615	86.29%	-
Sex
Male	7021	57.08%	6245	57.09%	776	56.98%	0.936	642	53.68%	273	55.71%	6106	57.52%	0.032
Female	5280	42.92%	4694	42.91%	586	43.02%		554	46.32%	217	44.29%	4509	42.48%
Age group
18-19 yrs	32	0.26%	26	0.24%	6	0.44%	0.129	8	0.67%	5	1.02%	19	0.18%	< 0.001
20-29 yrs	396	3.22%	348	3.18%	48	3.52%		63	5.27%	29	5.92%	304	2.86%
30-39 yrs	908	7.38%	799	7.30%	109	8.00%		144	12.04%	48	9.80%	716	6.75%
40-49 yrs	1436	11.67%	1259	11.51%	177	13.00%		168	14.05%	73	14.90%	1195	11.26%
50-59 yrs	2687	21.84%	2375	21.71%	312	22.91%		261	21.82%	113	23.06%	2313	21.79%
60-69 yrs	3421	27.81%	3054	27.92%	367	26.95%		306	25.59%	107	21.84%	3008	28.34%
70-79 yrs	2573	20.92%	2322	21.23%	251	18.43%		176	14.72%	86	17.55%	2311	21.77%
≥ 80 yrs	848	6.89%	756	6.91%	92	6.75%		70	5.85%	29	5.92%	749	7.06%
Diabetes
No	10,032	81.55%	9076	82.97%	956	70.19%	< 0.001	958	80.10%	406	82.86%	8668	81.66%	0.315
Yes	2269	18.45%	1863	17.03%	406	29.81%		238	19.90%	84	17.14%	1947	18.34%
Dialysis vintage
Less than 1 yr	2067	16.80%	1889	17.27%	178	13.07%	< 0.001	340	28.43%	112	22.86%	1615	15.21%	< 0.001
1-2 yrs	2757	22.41%	2432	22.23%	325	23.86%		197	16.47%	103	21.02%	2457	23.15%
3-5 yrs	2816	22.89%	2486	22.73%	330	24.23%		287	24.00%	94	19.18%	2435	22.94%
6-10 yrs	2797	22.74%	2457	22.46%	340	24.96%		214	17.89%	115	23.47%	2468	23.25%
More than 10 yrs	1864	15.15%	1675	15.31%	189	13.88%		158	13.21%	66	13.47%	1640	15.45%

^aP-value patients without COVID-19 versus patients with COVID-19.

^bP-value unvaccinated patients versus vaccinated patients (complete vaccination and incomplete vaccination).