Table 3.
Results of meta-regression analyses
| Covariate | Studies | OR | LCI | UCI | P |
|---|---|---|---|---|---|
| ECMO duration | 19 | 0.987 | 0.979 | 0.994 | 0.001 |
| Age | 20 | 1.014 | 1.003 | 1.024 | 0.01 |
| BMI | 16 | 0.977 | 0.956 | 0.999 | 0.04 |
| Male | 21 | 0.566 | 0.314 | 1.017 | 0.06 |
| Smoking | 7 | 0.360 | 0.105 | 1.232 | 0.10 |
| P/F ratio | 15 | 1.003 | 0.998 | 1.007 | 0.25 |
| Sample size | 22 | 1.000 | 1.000 | 1.000 | 0.59 |
| SOFA score | 11 | 0.991 | 0.951 | 1.033 | 0.66 |
| Ventilation-to-ECMO interval | 16 | 0.997 | 0.945 | 1.051 | 0.90 |
| DM | 19 | 1.018 | 0.645 | 1.606 | 0.94 |
| HTN | 18 | 0.987 | 0.648 | 1.502 | 0.95 |
p-values: p < 0.05 represented in bold
OR, Odds ratio; LCI, lower 95% confidence interval; UCI, upper 95% confidence interval; P, p-value; ECMO, extracorporeal membrane oxygenation; SOFA, Sequential Organ Failure Assessment; BMI, body mass index; DM, diabetes mellitus; P/F, PaO2/FiO2; HTN, hypertension