Classifying the economically productive population as persons aged 20-69.
D000328:Adult; D000367:Age Factors; D000368:Aged; D001208:Asia; D002965:Classification; D003710:Demography; D019049:Developed Countries; D004467:Economics; D004651:Employment; D005069:Evaluation Studies as Topic; D005202:Asia, Eastern; D006280:Health Workforce; D007564:Japan; D008136:Longevity; D009026:Mortality; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research
Adult; Age Factors; Aged; Asia; Classification; Critique; Demographic Factors; Developed Countries; Eastern Asia; Economic Factors; Human Resources; Japan; Labor Force; Length Of Life--changes; Mortality; Population; Population Characteristics; Population Dynamics; Research Methodology