Fig 1.
Adapted from: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Iterns for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Med 6(7): el000097. doi:10.1371/journal.pmedl000097. For more information, visit www.prisma-statement.org.
Table 1.
Clinical characteristics of clinical trials and cohort studies, N = 79.
Fig 2.
Meta-analysis of 30-day mortality in a comparison of stress test versus no stress test among non-cardiac surgery patients, N = 6 studies.
There are only 6 studies which had both groups (had stress test versus no stress test) among 79 studies.
Fig 3.
Meta-analysis of 30-day mortality among non-cardiac surgery patients who received stress test using procedures specific to binomial data and exact methods, N = 40.
ES is effect size- here it is %. Here we calculate the pooled estimate after Freeman-Tukey Double Arcsine Transformation (Freeman, M. F., and Tukey, J. W. 1950) to stabilize the variances.
Table 2.
Stratified analysis of 30-day mortality among non-cardiac surgery patients who received stress test using procedures specific to binomial data and exact methods by study characteristics, N = 40.
Table 3.
Sensitivity analysis of 30-day mortality among non-cardiac surgery patients who received stress test using procedures specific to binomial data and exact methods by quality characteristics of the study, N = 40.