Research on Individuals Aged One Hundred and Over: Protocol from the Sevilla and Castilla y León Centenarian Studies

Spain’s population of people aged 100 years and over has increased tenfold since the last quarter of the 20th century, exceeding 16,000 individuals by 2019. Despite this cohort’s growth, which has made centenarians a significant segment of Spain’s population in their own right, centenarians have remained little studied from the perspective of social sciences. A key challenge for research concerning centenarians is understanding their personal...