Description: A recent study sheds light on the measurement and implications of the relationship between increased morbidity and declining disability. The results were not consistent across all populations. This study of the compression of morbidity is part of a wider project called the M-project, led by the four authors, which aims to explore the demographic factors leading to an increase in the adult longevity, investigate the phenomenon called the compression of mortality and develop a new methodological approach to longevity analysis with focus on the modal age at death M.

Description: This paper defines health expectancy as that part of life expectancy where the person is expected to be healthy. It also breaks down the remainder of life expectancy into two unhealthy categories, one where assisted living will be necessary, and one where a skilled nursing facility will be necessary. These expectations are calculated for many combinations of age, other demographic characteristics, and current health issues.