Summary of meta-analyzed standardized mean differences (SMD) for laboratory biomarkers.

Biomarkers are sorted by SMD magnitude and included if they are statistically significant and represent data from at least 4 countries. The SMD reflects the difference in the average biomarker level in patients who died compared to those who survived in standard deviation units. SMDs represented by black squares are positive (the average biomarker level in those who died are higher than the level in those who survived) and SMDs represented by white squares are negative (the average biomarker level in those who died are lower than the level in those who survived).