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Subgroup analysis by region and income
| Region | Pooled Incidence (%) | 95% CI |
|---|---|---|
| All | 6.0 | [4.0, 9.0] |
| North America, Western Europe and Australia | 4.3 | [2.5, 6.6] |
| Asia | 3.9 | [1.4, 7.3] |
| Income | ||
| All | 6.0 | [4.0, 9.0] |
| High income countries (HIC) | 7.0 | [4.0, 10.0] |
| Low and middle-income countries (LMIC) | 3.0 | [1.0, 6.0] |
| Population at risk | ||
| All | 6.0 | [4.0, 9.0] |
| VLBW infants | 6.0 | [3.0, 9.0] |
| Extremely premature | 7.0 | [2.0, 13.0] |
