Meta-regression analyses examining the association of AKI incidence rate according to the KDIGO-equivalent definition and its associated mortality rate with aggregate study- and country-level characteristics
| Characteristic | Rate Change (%) | 95% Confidence Interval | P Value |
|---|---|---|---|
| AKI incidence rate | |||
| Country percentage GDP spent on total health expenditure (per 1% ↑) | 0.54 | 0.07 to 1.02 | 0.03 |
| Country gross national income per capita (per $10,000 ↑) | 0.18 | −0.90 to 1.27 | 0.74 |
| Year of study publication (per year ↑) | −2.02 | −2.83 to −1.22 | <0.001 |
| AKI-associated mortality rate | |||
| Country percentage GDP spent on total health expenditure (per 1% ↑) | −1.36 | −1.97 to −0.75 | <0.001 |
| Country gross national income per capita (per $10,000 ↑) | −3.43 | −4.63 to −2.23 | <0.001 |
| Year of study publication (per year ↑) | −1.46 | −2.69 to −0.24 | 0.02 |
GDP, gross domestic product.