Group | RR (95% CI) | P value | Heterogeneity (%) | P value for heterogeneity | P value for interaction test |
---|---|---|---|---|---|
Publication year | |||||
2005 or after | 0.49 (0.16–1.52) | 0.215 | 0.0 | 0.992 | 0.696 |
Before 2005 | 0.65 (0.27–1.59) | 0.344 | 0.0 | 0.427 | |
Mean age (years) | |||||
≥ 65.0 | 0.53 (0.09–2.92) | 0.462 | 0.0 | 0.949 | 0.897 |
< 65.0 | 0.60 (0.28–1.28) | 0.186 | 0.0 | 0.677 | |
Percentage male (%) | |||||
≥ 70.0 | 0.63 (0.27–1.44) | 0.272 | 0.0 | 0.713 | 0.741 |
< 70.0 | 0.48 (0.13–1.79) | 0.277 | 0.0 | 0.898 | |
Disease status | |||||
ALI | 0.48 (0.20–1.15) | 0.100 | 0.0 | 0.992 | 0.468 |
ALI/ARDS or ARDS | 0.83 (0.25–2.71) | 0.757 | 0.0 | 0.611 | |
Baseline PaO2/FiO2 ratio | |||||
≥ 150 | 0.48 (0.17–1.37) | 0.170 | 0.0 | 0.975 | 0.634 |
< 150 | 0.68 (0.26–1.77) | 0.430 | 0.0 | 0.751 | |
Jadad score | |||||
3 | 0.48 (0.20–1.15) | 0.100 | 0.0 | 0.992 | 0.468 |
2 | 0.83 (0.25–2.71) | 0.757 | 0.0 | 0.611 |