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. 2022 May 2;4(1):20220016. doi: 10.1259/bjro.20220016

Table 4.

Age-specific severity of COVID-19 as stratified by type of SARS-CoV-2 lineage

<60 years (n = 423) 60–75 years (n = 314) >75 years (n = 263)
Non-B.1.1.7 (n = 163) B.1.1.7 (n = 260) p Non-B.1.1.7 (n = 162) B.1.1.7 (n = 152) p Non-B.1.1.7 (n = 175) B.1.1.7 (n = 88) p
Mild disease, n (%) 42 (25.8) 45 (17.3) .037 6 (3.7) 10 (6.6) .453 1 (0.6) 3 (3.4) .214
Moderate disease, n (%) 97 (59.5) 160 (61.5) 109 (67.3) 101 (66.4) 101 (57.7) 43 (48.9)
Severe disease, n (%) 8 (4.9) 30 (11.5) 9 (5.5) 12 (7.9) 8 (4.6) 4 (4.5)
Death, n (%) 16 (9.8) 25 (9.6) 38 (23.5) 29 (19.1) 65 (37.1) 38 (43.2)