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. 2017 Jul 30;2017(7):CD000253. doi: 10.1002/14651858.CD000253.pub4

Comparison 3. Vitamin C versus placebo.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 AMD 1   Risk Ratio (M‐H, Fixed, 95% CI) Totals not selected
1.1 Any AMD 1   Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]
1.2 Late AMD (either neovascular AMD or geographic atrophy or both) 1   Risk Ratio (M‐H, Fixed, 95% CI) 0.0 [0.0, 0.0]