Fig. 6From: Dietary and lifestyle factors for primary prevention of nephrolithiasis: a systematic review and meta-analysisForest plot of highest vs lowest category of vitamin and calcium supplementation and risk of incident nephrolithiasis in RCTs. RECORD, Randomized Evaluation of Calcium or Vitamin D; ViDA, Vitamin D Assessment; RCTs, randomized controlled trials; RR, relative risk; CI, confidence intervalBack to article page