Table 1.

Independent risk factors for incidence of COVID-19 in all HD patients

Independent risk factors for COVID-19	OR (95% CI)	P-value
Age (≥70 years)	0.79 (0.6–0.98)	0.045
Sex (male)	0.88 (0.7–1.1)	0.272
BMI	1.15 (1.01–1.31)	0.035
Diabetes mellitus	1.25 (0.97–1.61)	0.083
Vitamin D supplementation	0.96 (0.76–1.21)	0.707
Hemoglobin	0.95 (0.85–1.05)	0.285
Albumin	0.96 (0.93–1)	0.032
Inorganic phosphorus	1.04 (0.96–1.12)	0.330
Calcium	0.93 (0.8–1.09)	0.385
Intact PTH	0.96 (0.79–1.17)	0.682
Living in a nursing home	2.94 (1.52–5.71)	0.001
Education—primary school	1.67 (0.48–0.93)	0.017
Glomerulonephritis	1.15 (0.84–1.57)	0.396
Weight gain	1.03 (0.95–1.11)	0.540
Cardiovascular disease	1.04 (0.81–1.33)	0.773
Gastrointestinal diseases	1.08 (0.83–1.41)	0.579
Mental and behavioural disorders	1.3 (0.9–1.88)	0.163
HIV infection	1.39 (0.19–10.2)	0.743
Parathyroidectomy	0.55 (0.28–1.09)	0.085
ARBs	0.72 (0.53–0.99)	0.092
ACE inhibitors	1.18 (0.89–1.56)	0.262
Nitrates	1.1 (0.79–1.53)	0.579
Antidepressants	1.11 (0.7–1.75)	0.664
Phosphate binders	1.09 (0.86–1.39)	0.479
Calcimimetics	1.04 (0.72–1.5)	0.828
Fibrates	1.24 (0.65–2.37)	0.515
Oral anticoagulants	1.41 (0.98–2.03)	0.061
Statins	1.13 (0.88–1.46)	0.338
Acetylic salicylic acid	1.18 (0.93–1.49)	0.178

ORs were calculated by logistic regression models, adjusted for all variables with a P < 0.2 in the univariate analyse, country and the following variables, considered to be of clinical relevance for the predicted outcomes: age, gender, BMI, diabetes mellitus, treatment with active vitamin D, hemoglobin, serum inorganic phosphorus, calcium and intact PTH. HIV, human immunodeficiency virus.