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. 2017 Jul 3;2017(7):CD012380. doi: 10.1002/14651858.CD012380.pub2

Comparison 1. Hydroxyurea vs placebo.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Slower progression or improvement in GFR (mL per min per 1·73 m²) 1   Mean Difference (IV, Random, 95% CI) Totals not selected
1.1 at 18 to 24 months 1   Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
2 Improvement in ability to concentrate urine (mOsm/kg) 1   Mean Difference (IV, Random, 95% CI) Totals not selected
2.1 at 18 to 24 months 1   Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
3 SAEs assessed with acute chest syndrome 1   Risk Ratio (M‐H, Random, 99% CI) Totals not selected
4 SAEs assessed with painful crisis 1   Risk Ratio (M‐H, Random, 99% CI) Totals not selected
5 SAEs assessed with hospitalisations 1   Risk Ratio (M‐H, Random, 99% CI) Totals not selected
6 SAEs assessed with stroke 1   Peto Odds Ratio (Peto, Fixed, 99% CI) Totals not selected
7 AEs assessed with neutropenia 1   Risk Ratio (M‐H, Random, 99% CI) Totals not selected
8 AEs assessed with thrombocytopenia 1   Risk Ratio (M‐H, Random, 99% CI) Totals not selected
9 Number of participants transfused 1   Risk Ratio (IV, Random, 95% CI) Totals not selected