@lebon80 @andyaschmidt @EricTopol @PNASNews @g_leech_ We mostly don't. There are a huge number of uncontrolled variables, and the relatively small number of randomized studies are of poor quality, especially low N (i.e. weak power).
@lebon80@andyaschmidt@EricTopol@PNASNews@g\u leech\uU我们大多没有。有大量不受控变量,相对较少的随机研究质量较差,尤其是低氮(即弱功率)。