If the prevalence is very low as compared to the incidence for a disease, it implies:: (A) Disease is very fatal and/or easily curable, (B) Disease is non-fatal, (C) Calculation of prevalence & incidence is wrong, (D) Nothing can be said, as they are independent
Answer is A. Prevalence = Incidence X Mean duration of the disease (P = I X d) Incidence reflects causal factors Duration reflects the prognostic factors In the given question, prevalence is very low as compared to the incidence for a disease. Thus, d has to be low; duration of the disease can be sho under 2 circumstances: Either disease is very fatal, or Disease is easily curable