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National Institute of Population and Social Security Research

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  2. Staff
  3. GAI Ruoyan


GAI Ruoyan Senior Researcher
Department of Empirical Social Security Research
Updated; 15 January 2019

Research Field

  • Health Economics, Epidemiology, Health Outcome Research, Global Health

Research Project

  • A comprehensive study on the realization strategy of Japan’s Plan for Dynamic Engagement of All Citizens
  • The national survey on social security and people’s life
  • Outcome / impact evaluation of community interventions to prevent child abuse and promote parenting
  • Development and application of pediatric health outcome evaluation tools
  • Outcome / impact evaluation of local health system strengthening in rural Bangladesh

External Activities

  • Academic Society
    Japan Health Economic Association,
    Japan Association of International Health,
    International Society for Pharmacoeconomic Outcome Research (ISPOR)
  • Part-time Lecturer
    Graduate School of Social and Cultural Studies, Nihon University

Publications /Papers

  • GBD Health Financing Collaborators (Ruoyan Tobe-Gai). Trends in future health financing and coverage: future health spending and universal health coverage in 188 countries, 2016-40. Lancet. 2018; 391 (10132): 1783-98.
  • Tobe RG*, Haque SE, Ikegami K, Mori R. Mobile-health tool to improve maternal and neonatal health care in Bangladesh: A cluster randomized controlled trial. BMC Pregnancy and Childbirth. 2018; 18: 102.
  • GBD 2017 SDG Collaborators (Ruoyan Tobe-Gai). Measuring progress from 1990 to 2017 and projecting attainment to 2030 of the health-related Sustainable Development Goals for 195 countries and territories: A systematic analysis for the Global Burden of Disease Study 2017. Lancet. 2018; 392 (10159): 2091-138.
  • Mo X, Tobe RG*, Wang L, Wu B, Luo H, Nagata C, Mori R. Cost-effectiveness analysis of different types of human papillomavirus vaccination combined to cervical cancer screening program in Mainland China. BMC Infectious Diseases. 2017, 17: 502.
  • Global Burden of Disease Health Financing Collaborators (Ruoyan Tobe-Gai). Evolution and patterns of global health financing 1995-2014: development assistance for health, and government, prepaid private, and out-of-pocket health spending in 184 countries. Lancet 2017; 389: 1981-2004.
  • Cui S, Tobe RG*, Mo X, Liu X, Xu L, Li S. Cost-effectiveness analysis of rotavirus vaccination in China: Projected possibility of scale-up from the current domestic option. BMC Infectious Diseases. 2016; 16: 677.
  • Mo X, Tobe RG*, Liu X, Mori R. Cost-effectiveness and health benefits of pediatric 23-valent pneumococcal Polysaccharide Vaccine, 7-Valent and Forecasting 13-Valent Pneumococcal Conjugate Vaccines in China. Pediatric Infectious Disease Journal. 2016; 35: e353-61.
  • Tobe RG*. Association between transient newborn hypoglycemia and test proficiency. JAMA Pediatrics. 2016; 170: 297.
  • Mo X, Xu L, Luo H, Wang X, Zhang F, Tobe RG*. Do different parenting styles impact the health and physical growth of “left-behind” preschool-aged children? A cross-sectional study in rural China. European Journal of Public Health. 2016; 26: 18-23.
  • Feng A, Wang L, Chen X, Liu X, Li L, Wang B, Luo H, Mo X, Tobe RG*. Developmental origins of health and disease: implications to health and nutritional issues among rural children in China. BioScience Trends 2015; 9: 82-7.
  • Tobe RG*, Mori R. Use of multiple micronutrient powders for young children’s growth. The Lancet. 2013;382:1171-1172.
  • Tobe RG, Mori R, Huang L, et al. Cost-effectiveness analysis of a national neonatal hearing screening program in China: conditions for the scale-up. PLoS ONE.2013; 8: e51990.
  • Tobe RG, Mori R, Shinozuka N, et al: A nationwide investigation on gestational age specific birthweight and discharge mortality among Japanese twins in general hospitals. Paediatrics and Perinatal Epidemiology. 2010; 25: 228-35.