奇異現象：既往無し急性心筋梗塞患者はリスク要素少ないほど入院死亡多い

Canto JG, Kiefe CI, Rogers WJ, et al. Number of coronary heart disease risk factors and mortality in patients with first myocardial infarction.
JAMA 2011; 306:2120-2127.

奇異的現象：心血管疾患既往無しの急性心筋梗塞患者において、冠動脈心血管リスク数が少ないほど院内死亡率増加



リスク要素が逆の結果になっている観察結果


"Until we are able to better understand the possible reasons for the 'observed association,' one would be very cautious about trying to make inferences for clinical practice. The authors do discuss several potential reasons for the observed association, and they seem reasonable possibilities," Vasan concluded.
http://www.theheart.org/article/1314175.do

混乱してるのが現れている。