Health and numbers : a problems-based introduction to biostatistics .

医疗卫生与数字:基于问题的生物统计学概论。

Nicholas lange , an associate professor of psychiatry and biostatistics at harvard medical school in boston , cautioned that the study was small .

nicholaslange，在波士顿的哈佛医学院精神病学和生物统计学副教授，告诫说，这只是个小研究。

That means that perhaps what makes centenarians live longer is not a lack of predisposition to such illnesses ; it 's the enrichment of genetic variants associated with longevity , said paola sebastiani , lead author of the study and professor of biostatistics at boston university school of public health .

研究的带头作者、波士顿大学公共健康学院生命统计学教授paolasebastiani说：的这意味着可能使百岁人活得更长的原因并不是缺少患这些疾病的遗传素因，而是与长寿相关的遗传变异多样性。