Table 3.
Quality assessment according to GRADE guidelines.
| Outcome | Sample size/no. of studies | Quality assessment | Relative effect, RR (95% CI) | Quality | ||||
|---|---|---|---|---|---|---|---|---|
| Risk of bias | Inconsistency | Indirectness | Imprecision | Publication bias | ||||
| NEC |
689 9 |
Not serious | Not serious | Not serious | Seriousa | Undetected | 0.59 (0.33–1.06) | Moderate |
| Late-onset Sepsis |
689 9 |
Not serious | Not serious | Not serious | Seriousa | Undetected | 0.78 (0.60–1.03) | Moderate |
| Mortality |
505 6 |
Not serious | Not serious | Not serious | Seriousa | Undetected | 0.63 (0.38–1.05) | Moderate |
a95% CI is wide enough which contains RR = 1