Principal components analysis

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In statistics, principal components analysis was developed by Pearson in 1901 and may be used for analysis of a cohort study.[1] The principal components analysis can only correct for confounding by independent variables that have been measured.


Software available for meta-analysis includes:


  1. Pearson, K (1901). "On lines and planes of closest fit to systems of points in space". Philosophical Magazine 2: 559–572. [e]
  2. Torsten Hothorn; Everitt, Brian. CRAN - Package HSAUR, 2nd ed.