China has the world’s largest and fastest-growing elderly population, primarily living in outdated urban residential communities. These aging populations face challenges in outdoor activities (OA) and quality of life (QoL) due to deteriorating neighborhood-built environments (NBE). While upgrading these environments is essential for urban renewal, the specific NBE factors affecting OA and QoL for the elderly are not well understood, creating a gap in existing research. This study addresses this gap by investigating how NBE elements influence the OA and QoL of elderly residents in these communities. This study investigates these interactions by conducting a comprehensive literature review, followed by a questionnaire survey, with data analyzed using factor analysis, correlation analysis, and regression analysis. The results reveal that supermarkets and subways significantly impact the physical health of older adults. Psychological health is primarily shaped by daily activities, social relationships, and self-care ability, with roads, hospitals, and bus stops further affecting daily activities. Social relationships are largely influenced by social activities, which are impacted by grocery markets, subways, and parks. Additionally, self-care ability is affected by leisure and daily activities, as well as the accessibility of supermarkets, grocery markets, subways, and buses. These findings offer valuable insights for government-led initiatives aimed at implementing age-friendly retrofitting of NBEs, ultimately enhancing the OA and QoL of the elderly population.
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