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. 2021 May 17;35(6):1661–1670. doi: 10.1038/s41375-021-01264-8

Table 2.

Risk of Survival and Surrogate Clinical Endpoints.

Ref Risk of death (RR [95%CI]) Risk of ICU admission (RR [95%CI]) Risk of invasive mechanical ventilation (RR [95%CI]) Risk of secondary infection (RR [95%CI])
Observational (historical control) 0.28 [0.16, 0.49] NA 0.74 [0.40, 1.37] 2.18 [0.68, 6.98]
Observational (matched) 0.68 [0.53, 0.87] 2.25 [1.17, 4.33] 0.77 [0.33, 1.80] 1.12 [0.77, 1.62]
Observational (concurrent control) 1.10 [0.77, 1.56] 1.91 [0.47, 7.69] NA 1.27 [0.85, 1.89]
Randomized controlled trials 1.18 [0.57, 2.44] 0.80 [0.49, 1.33] 0.92 [0.21, 4.10] 0.26 [0.03, 2.28]
Total events 0.74 [0.59, 0.93] 1.40 [0.64, 3.06] 0.83 [0.57, 1.22] 1.30 [0.97, 1.74]

RR relative risk, NA not available.