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. 2021 Dec 16;97(2):327–332. doi: 10.1016/j.mayocp.2021.12.002

Table.

Clinical Characteristics of Patients With COVID-19 due to Alpha/Beta vs Delta Varianta,b

Alpha/beta predominant (n=4874) Delta predominant (n=482) Total (N=5356) P value
Body mass index (kg/m2) 32.28 (27.31-38.26) 28.72 (25.77-33.36) 31.93 (27.11-37.89) <.01
 No. missing 543 64 607
Age (y) 62.92 (51.34-71.53) 58.91 (45.85-68.44) 62.57 (50.61-71.41) <.01
 No. missing 120 16 136
Sex 2413 (49.5) 230 (47.7) 2643 (49.3) .45
Race <.01
 American Indian/Pacific Islander 19 (0.4) 0 (0.0) 19 (0.4)
 Asian 69 (1.4) 4 (0.8) 73 (1.4)
 Black/African American 108 (2.2) 32 (6.6) 140 (2.6)
 Unknown 134 (2.7) 23 (4.8) 157 (2.9)
 White 4544 (93.2) 423 (87.8) 4967 (92.7)
Ethnicity .84
 Hispanic/Latino 251 (5.1) 27 (5.6) 278 (5.2)
 Not Hispanic or Latino 4540 (93.1) 448 (92.9) 4988 (93.1)
 Unknown 83 (1.7) 7 (1.5) 90 (1.7)
CCI total 77.48 (21.36-90.15) 90.15 (53.39-95.87) 77.48 (21.36-90.15) <.01
MASS total points 3.00 (2.00-5.00) 3.00 (0.00-5.00) 3.00 (2.00-5.00) <.01
Monoclonal antibody infused NA
 Bamlanivimab 3392 (69.6) 0 (0.0) 3392 (63.3)
 Bamlanivimab/etesevimab 460 (9.4) 0 (0.0) 460 (8.6)
 Casirivimab/imdevimab 1022 (21.0) 482 (100.0) 1504 (28.1)
Monoclonal antibody infusion site NA
 ARZ 639 (13.1) 67 (13.9) 706 (13.2)
 FLA 670 (13.7) 268 (55.6) 938 (17.5)
 MCHS 2399 (49.2) 98 (20.3) 2497 (46.6)
 RST 1166 (23.9) 49 (10.2) 1215 (22.7)
Time to infusion 2.00 (2.00-3.00) 2.00 (1.00-3.00) 2.00 (2.00-3.00) <.01
 No. missing 120 16 136
Severe COVID-19 outcome 160 (3.3) 24 (5.0) 184 (3.4) .05
Required intensive care unit–level intervention 19 (0.4) 3 (0.6) 22 (0.4) .45
Completed vaccination 102 (2.10) 226 (46.9) 328 (6.1) <.01
a

ARZ, Arizona; CCI, Charlson Comorbidity Index; COVID-19, coronavirus disease 2019; FLA, Florida; MASS, Monoclonal Antibody Screening Score; MCHS, Mayo Clinic Health System; NA, not applicable; RST, Rochester.

b

Categorical variables are presented as number (percentage). Continuous variables are presented as median (Q1-Q3).