Table 1.

Demographics of patients on hemodialysis with confirmed COVID-19

VariablePatient CharacteristicsP Valuea
COVID-19–Positive PatientsCOVID-19–Negative PatientsAll Patients (%)
Population, n (%)10,558 (100)201,364 (100)211,922 (100)
Age, yr, n (%)
 <183 (0)52 (0)55 (0)>0.99
 18–441121 (10.6)21,139 (10.5)22,260 (10.5)0.71
 45–541687 (16)29,273 (14.5)30,960 (14.6)<0.001
 55–642728 (25.8)48,621 (24.1)51,349 (24.2)<0.001
 65–742852 (27)55,132 (27.4)57,984 (27.4)0.42
 75+2167 (20.5)47,147 (23.4)49,314 (23.3)<0.001
Age, yr (SD)62.6 (14)63.5 (14.3)63.5 (14.2)<0.001
Dialysis vintage, mo (SD)47.3 (49.8)45.4 (50)45.5 (50)<0.001
Men, n (%)5822 (55.1)116,165 (57.7)121,987 (57.6)<0.001
Race, n (%)
 White3981 (37.7)81,995 (40.7)85,976 (40.6)<0.001
 Black3126 (29.6)50,847 (25.3)53,973 (25.5)<0.001
 Unknown3155 (29.9)60,808 (30.2)63,963 (30.2)0.50
 Other296 (2.8)7714 (3.8)8010 (3.8)<0.001
Ethnicity, n (%)
 Non-Hispanic5537 (52.4)113,217 (56.2)118,754 (56)<0.001
 Hispanic1675 (15.9)21,689 (10.8)23,364 (11)<0.001
 Unknown3346 (31.7)66,458 (33)69,804 (32.9)0.005
Comorbid conditions, n (%)
 Diabetes4891 (46.3)82,739 (41.1)87,630 (41.4)<0.001
 IHD2101 (19.9)41,898 (20.8)43,999 (20.8)0.03
 PAD/PVD967 (9.2)17,918 (8.9)18,885 (8.9)0.37
 CHF2435 (23.1)44,968 (22.3)47,403 (22.4)0.08
 CVD802 (7.6)12,492 (6.2)13,294 (6.3)<0.001
 COPD973 (9.2)20,185 (10)21,158 (10)0.007
 Hypertension7534 (71.4)141,367 (70.2)148,901 (70.3)0.01
  • The patients received in-center hemodialysis in US Fresenius Medical Care North America dialysis facilities up to July 29, 2020. IHD, ischemic heart disease; PAD, peripheral arterial disease; PVD, peripheral vascular disease; CHF, congestive heart failure; CVD, cerebrovascular disease; COPD, chronic obstructive pulmonary disease.

  • a For continuous variables, P values result from the two-sided t test H0: mean values for COVID-19–negative patients are equal to mean values for COVID-19–positive patients in the full population. For categorical variables, P values result from the chi-squared test H0: proportion in COVID-19–negative patients is equal to the proportion in COVID-19–positive patients.