LOW DOSE (greater than or equal to 2‐<4 mg/day) probably leads to higher leaving the study early: any reason ‐ when compared with… compared with ANY DOSE ‐ short term (moderate certainty).
Lower showed no clear difference in mortality, near term corrected age or discharge compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
Lower showed no clear difference in neurodevelopmental disability compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
Lower showed no clear difference in intubation in the delivery room compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
Lower showed no clear difference in severe retinopathy of prematurity (≥ stage 3) compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
Lower showed no clear difference in severe intraventricular haemorrhage (grade 3 or 4) compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
Lower showed no clear difference in necrotising enterocolitis compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).
It is very uncertain whether lower changes chronic lung disease (36 weeks' corrected age) compared with higher oxygen concentrations titrated to target oxygen saturations… (very low certainty).
Transfer from incubator to cot at lower showed no clear difference in proportion of infants having at least one episode of low temperature… compared with higher body weight (high certainty).
Transfer from incubator to cot at lower showed no clear difference in proportion of infants having at least one episode of returning to… compared with higher body weight (moderate certainty).
Transfer from incubator to cot at lower showed no clear difference in proportion of infants exclusive breastfeeding at discharge compared with higher body weight (high certainty).
Mean DMFT tended to increase with unemployment rate (low 1.23, medium 2.08, high 2.38; ANOVA p<.05); descriptive country-level means only, not meta-analyzed or GRADE-rated.
Community-dwelling older adults in higher-income countries had better OHRQoL than those in lower-income countries (77.9, 95% CI 70.2 to 85.6 vs 66.9, 95% CI 56.7 to 77.0); the difference by income was statistically significant (ungraded).
Older adults in countries with relative income equality (low Gini index) had markedly higher OHRQoL (91.3, 95% CI 90.0 to 92.6) than those in less equal countries; the difference by Gini index was statistically significant (ungraded).