人类死亡率的平原:长寿先驱的人口统计
Elisabetta Barbi1, Francesco Lagona2, Marco Marsili3
1Department of Statistical Sciences, Sapienza University of Rome, Rome, Italy. elisabetta.barbi@uniroma1.it.
概括
在105岁及以上的人群中,死亡率似乎稳定下来,形成一个平原. 这一发现挑战了以前关于极端年龄增加死亡率的假设, 并支持了人类寿命的生物限制理论.
科学领域:
- 老年学
- 人口统计
- 进化生物学
背景情况:
- 了解极端年龄的人类寿命和死亡率对于生物学限制和进化塑造的理论至关重要.
- 之前关于晚年死亡率的研究受到了数据聚合的限制,导致关于危险率模式的持续辩论.
研究的目的:
- 通过估计105岁及以上个体的危险率来研究极端年龄的死亡率.
- 确定人类死亡风险曲线是否会平稳,或者在晚年继续呈指数增长.
主要方法:
- 使用2009年至2015年所有105岁及以上的意大利居民的综合死亡数据.
- 分析了3836例记录病例的数据集,重点关注1896年至1910年间出生的人.
- 估计特定年龄的危险率,以确定极端年龄的死亡趋势.
主要成果:
- 观察到危险率在105岁以后基本保持不变,表明死亡率稳定.
- 估计的危险曲线均,表明老年人死亡风险稳定.
- 这些发现是强有力的,没有影响以前研究的聚合偏见.
结论:
- 提供了迄今为止最强有力的证据,
- 支持生物寿命限制可能表现为晚年死亡率的平衡.
- 有助于更准确地理解人类的长寿及其进化含义.
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