Department of Medical Statistics of Public Health Yat-sen University 510080;
Department of Chronic Non-communicable Disease Control and Prevention Center for Disease Control and Prevention 510440;
Institute for Infectious Disease Control and Prevention Provincial Center for Disease Control and Prevention 511430;
Peking University Center for Public Health and Epidemic Preparedness&Response University 100191;
Sun Yat-sen Global Health Institute Yat-sen University 510080;
Center for Health Information Research Yat-sen University 510080;
Generalized principal component analysis; Health-adjusted life expectancy; MEGACITIES; Quality of life; Social determinants; Temporal trend; Urban expansion;