Preferred Reporting Items for Systematic reviews and Meta-Analyses - individual participant data(English)

• such studies aim to collect, check, and reanalyze individual-level data from all studies addressing a particular research question and are therefore considered a gold standard approach to evidence synthesis. They are likely to be used with increasing frequency as current initiatives to share clinical trial data gain momentum and may be particularly important in reviewing controversial therapeutic areas
• IPD, PRISMA
• Meta-analysis, Guidelines