Table 2.

Demographics and comorbidities of patients on hemodialysis with and without an undetected severe acute respiratory syndrome coronavirus 2 infection identified in the subsequent ≥3 d

VariableUnaffected PatientsCoronavirus Disease 2019+
Number of patients on HD29,32411,166
Age (yr), mean±SD62.66±14.2562.62±13.92
Male, n (%)16,614 (567)6149 (55)
White race, n (%)12,021 (41)4338 (39)
Black race, n (%)7838 (27)3354 (30)
Other race, n (%)1223 (4)372 (3)
Unknown race, n (%)8242 (28)3102 (28)
Hispanic ethnicity, n (%)2849 (14)1831 (23)
BMI (kg/m2) mean±SD29.26±7.7129.45±7.83
Dialysis vintage (yr) mean±SD3.75±4.113.96±4.09
Diabetes, n (%)19,186 (66)8085 (73)
CHF, n (%)6710 (23)2595 (23)
Ischemic heart disease, n (%)7647 (26)2830 (26)
Central venous catheter access, n (%)6799 (23)2738 (25)
  • Age, sex, and catheter access variables were included in the ML prediction model to classify the risk of an individual HD patient having a SARS-CoV-2 infection being identified in the following ≥3 d. HD, hemodialysis; BMI, body mass index; CHF, congestive heart failure; ML, machine learning; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.