Ins: Answer the question true if mainly true, false if mainly false. Write T or F next to the item. king, the term epidemic is used only to destribe outbreaks of infectious disease. is an observational science that often uses data from naturally occurring situations. pulation is one that adds new members through immigration and births and loses members through 1 deaths. risk factor for the population is always important for the individual. les have an underlying order or levels from smallest to greatest. :lisease of low incidence and long duration, prevalence of the disease increases relative to incidence. .ologic studies have shown that race does not inuence the incidence and prevalence of disease. y rates are higher in the people with a high socioeconomic status than in those of low 2 status. rmiology characterizes health according to person, place, and time. ontinuous variables are sex and smoking status. :y refers to the number of years that a person is expected to live, at any particular year. :urveillance programs are used for infectious diseases, noninfectious diseases, and risk factors for es. iamples are the best samples to understand the prevalence of a disease in a population. :oefficient of +1 shows a stronger relationship between two variables than a coefficient of -1