TABLE 4.

Risk of fatal COVID-19 in grouped clusters

	Clusters 1+2 (N=72, 28.4%)	Clusters 3+4 (N=50, 19.7%)	Clusters 5+6 (N=132, 52%)
Subjects n (%)	72 (28.4)	50 (19.7)	132 (52)
Clusters 1+2
Clusters 3+4	2.67 (1.30–5.48), p=0.008
Cluster 5+6	13.73 (4.79–39.36), p<0.0001	5.90 (1.84–18.97), p=0.003

Data presented as HR (95% CI), p-value unless otherwise indicated. Values represent hazard ratios for death from COVID-19, with 95% confidence intervals for the average effect of each grouped clusters compared with other grouped clusters. p-values assess whether the distribution of characteristics within a given cluster is significantly different from a characteristic in other clusters in a regression model adjusted for age and WHO severity ordinal scale [21] at the time of admission. Numbers highlighted in boldface represent clusters that had significantly (p<0.05) different characteristics from characteristics in other clusters. CI: confidence interval; HR: hazard ratio; WHO: World Health Organization.