This question remains unanswered: Could you support with data that hierarchical levels of evidence based medicine are correct? (1)
PubMed search terms for chaos theory and evidence based medicine available in reference 2.
Ramirez JH. Hypothesis: hierarchical levels of evidence based medicine are wrong. BMJ 2014 (letter). http://www.bmj.com/content/348/bmj.g3725/rr/762595
Ramirez, Jorge H (2014): Scientific output (1975-2013): chaos theory vs. evidence based medicine. figshare. http://dx.doi.org/10.6084/m9.figshare.1216702