<prompt> Prevalance is given by which study?Case-control studyCohort studyCross-sectional studyCorrelation study  <response>: Ans. is c i.e., Cross-sectional study CharacteristicsCohort StudyCase control StudyCross Sectional StudyDesignProspectiveRetrospectiveOne point in timeIncidenceEstimatedNot estimatedNot estimatedPrevalenceNot estimatedNot estimatedEstimatedCalculationso Incidence rateso Relative risko Attributable risko Odds ratio 