Table 1.
Results of meta-analysis
| Setting (numbers of studies) | Sensitivity(95% CI) | Specificity(95% CI) | Youden index | AUC(95% CI)-ROC | I2(%) |
|---|---|---|---|---|---|
| PVI across all settings(n = 27) | 0.77 (0.67–0.85) | 0.77 (0.71–0.82) | 0.54 | 0.82 (0.79–0.85) | 95 |
| PVI in OR(n = 18) | 0.76 (0.67–0.84) | 0.76 (0.68–0.82) | 0.52 | 0.82 (0.79–0.85) | 81 |
| PVI in ICU(n = 4) | 0.79 (0.41–0.95) | 0.88 (0.77–0.94) | 0.67 | 0.89 (0.86–0.92) | 89 |
| PVI in adult(n = 22) | 0.77 (0.65–0.85) | 0.77 (0.70–0.82) | 0.54 | 0.82 (0.79–0.85) | 95 |
| PVI in cardiac surgery(n = 9) | 0.67 (0.40–0.87) | 0.78 (0.66–0.87) | 0.45 | 0.80 (0.77–0.84) | 89 |
| PVI in noncardiac surgery(n = 12) | 0.78 (0.64–0.88) | 0.71 (0.58–0.82) | 0.49 | 0.80 (0.76–0.83) | 63 |
| PVI without surgery(n = 6) | 0.85 (0.69–0.94) | 0.80 (0.70–0.87) | 0.65 | 0.86 (0.82–0.89) | 33 |
| PVI with colloid injection(n = 17) | 0.77 (0.67–0.85) | 0.82 (0.77–0.86) | 0.59 | 0.83 (0.80–0.86) | 87 |
| PVI with crystalloid injection(n = 4) | 0.77 (0.60–0.88) | 0.69 (0.52–0.81) | 0.46 | 0.79 (0.75–0.82) | 23 |
Abbreviations: AUC area under the curve, ROC receiving operating characteristics