Cross sectional study is implicated in:: (A) Study of chronic disease., (B) Study of rare disease., (C) Study of sudden outbreak., (D) All of the above.
Answer is C. Cross-sectional:
Gives PREVALENCE.
Studies one point at a time (One point study). Different individual of SAME age group ,studied only once - 1 point study
Is very important in Study of SUDDEN OUTBREAK OF DISEASE.