北美精算学会（SocietyofActuaries）新近的研究发现：57%的前退休人员在其当前年纪低估了预期寿命，而高估者仅有28%。
New research from the society of Actuaries finds that 57 % of pre-retirees underestimate life expectancy from their current age , while only 28 % overestimate .
北美精算学会