Volume 35 - Article 17 | Pages 471–504
Insight on 'typical' longevity: An analysis of the modal lifespan by leading causes of death in Canada
|Date received:||17 Aug 2015|
|Date published:||25 Aug 2016|
|Keywords:||age-at-death distribution, Canada, cancer, cardiovascular diseases, cause of death, longevity, modal age at death, old-age mortality, Poisson P-splines, smoothing|
|Additional files:||readme.35-17 (text file, 1 kB)|
|demographic-research.35-17 (zip file, 2 kB)|
Background: The longevity gains recorded in high-income countries since the 1960s are mainly due to a reduction in mortality from chronic degenerative diseases, which particularly affect older individuals. In recent years the adult modal age at death (M) gained increasing recognition as a lifespan indicator for monitoring improvements in old-age survival. However, studies of M by cause of death are lacking.
Objective: This work investigates trends in M by leading causes of death in Canada over the 1974–2011 period and identifies the causes of death that have been more responsive to improvements in lifestyle behaviors and medical progress.
Methods: We extend a recent method for estimating the all-cause M using a flexible P-spline approach to the context of cause-of-death analysis. Using data from the Canadian Vital Statistics Database for the 1974‒2011 period, we derive cause-specific modal age-at-death estimates and compare them in terms of levels and time-trends.
Results: Although modal age-at-death estimates for heart diseases, cerebrovascular diseases, and the three types of cancers studied (breast/prostate, colorectal, and trachea, bronchus, and lung) differ greatly in terms of levels, they have all followed a steady upward trend since the mid-1970s in Canada. Moreover, the increase in cause-specific modal age estimates occurred at a strikingly similar pace for most causes, except for breast cancer (females) and heart diseases (males), whose modal ages rose at a substantially faster pace.
Contribution: Our study introduces an innovative method for estimating cause-specific modal ages at death and provides the first available estimates of time-trends in M by leading causes of death.
Viorela Diaconu - Université de Montréal, Canada
Nadine Ouellette - Institut National d'Études Démographiques (INED), France
Carlo G. Camarda - Institut National d'Études Démographiques (INED), France
Robert Bourbeau - Université de Montréal, Canada
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