Figure 3.
Effect of allocation to higher dose corticosteroids or usual care (low-dose corticosteroids) on 28-day mortality in patients receiving no oxygen or simple oxygen only by other baseline characteristics
Subgroup-specific rate ratio estimates are represented by squares (with areas of the squares proportional to the amount of statistical information) and the lines through them correspond to the 95% CIs. The ethnicity subgroup excludes those with missing data, but these patients are included in the overall summary diamond. RR=rate ratio. χ2 values and their corresponding p values are tests for heterogeneity or trend.