Overview
Yasuhiko Saito is a demographer at Nihon University's Population Research Institute in Japan. His research focuses on healthy life expectancy and disability-free life expectancy, with a particular emphasis on comparative cross-national studies of aging populations and the Sullivan method for computing DFLE. He is a co-author, with Eileen Crimmins and Yuan Zhang, of the 2016 American Journal of Public Health paper documenting 40-year trends in U.S. DFLE.
Key Contributions
- Co-author of the 40-year U.S. DFLE trend analysis (1970–2011) using NHIS data and the Sullivan method; documented the absence of compression of morbidity at birth alongside partial compression at age 65+ for women (Crimmins, Zhang, and Saito 2016)
- Co-author of Crimmins, Reynolds, and Saito (1999): documented ~24% improvement in work inability for ages 60–69 over 1982–1993 using NHIS; showed improvement is mostly compositional (education) with real biological contribution from declining CVD and arthritis prevalence; no improvement for 50s; persistent racial disparities within education groups; concluded SS retirement age increase was warranted
- Specialist in applying and extending the Sullivan method for international and within-country DFLE comparisons
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