Table 2 Summary odds ratios derived from studies stratified by underlying mortality risk.

Strata of studies

Groups 1 (Endotoxemia and GN bacteremia detected) versus groups 4 (neither detected)

Groups 2 (GN bacteremia alone detected) versus groups 4 (neither detected)

Groups 3 (Endotoxemia alone detected) versus groups 4 (neither detected)

Number of studies

Odds ratio

(95% CI)

I^{2 a}

%

Odds ratio

(95% CI)

I^{2 a}

%

Odds ratio

(95% CI)

I^{2 a}

%