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. 2021 May 13;6(59):eabh2259. doi: 10.1126/sciimmunol.abh2259

Table 3. Complement analytes in patients with COVID-19 in the Yale School of Medicine longitudinal cohort.

Non-ICU (N=14) ICU (N=9) p
C5a, pg/mL 43.2 (43.2 – 43.2) 77.6 (43.2 – 285.6) 0.0016
Factor D, ng/mL 1,442 (1,234 – 1,803) 1,825 (1,541 – 2,576) 0.07

Abbreviations: ICU: intensive care unit. Statistical tests for comparison were done using the Mann-Whitney U test. All samples drawn within 24 hours of hospital admission. Values are represented as median (interquartile range).