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Period of Time
Method of Study of Development of Disease in Observed
Method of Study of Life Experience of Specific Group
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age group American Journal analysis attack and death calculation cancer census Chapter clinical Cocke County column control program County Tuberculosis Study culosis data regarding death rates diphtheria disability epidemiology evaluation examinations example expected deaths experience families female formula frequency given graph Hagerstown Morbidity Studies health and medical health department hookworm hospital household associates illness rates industrial infection investigation Journal of Hygiene Journal of Public live births male manifest tuberculosis method of study mortality Necator americanus needed notifiable diseases number of deaths obtained patients person-years persons planning poliomyelitis population premature premature births prevalence primary problem Public Health Reports Public Health Service punch card records reproduced by permission Rheumatic rheumatic fever secondary attack rate selected statistical data statistician stillbirth syphilis Table tabulation Tennessee Department tion typhoid fever United States Public unvaccinated vaccine Vital Statistics Wade Hampton Frost Williamson County Tuberculosis workers