University:
Johns Hopkins University
Course:
ME.250.699. | Medicine Elective
Academic year:

2023
Views:

83

Pages:

2
Author:

Yasin N.

Case-Control Study loutcome exproc als R. •Ratuosportini Stucly, study proceed from ellect to came • Botha exposure & out come home ocened; beyover the study Stout Use control gruaup to support myorum. • 1st appreach to cast causal hypothes Sleps 1 4. Selection & Cons. Dejenition I cous - Diagnostic criteria - Eligibility cinlerin sted chaijinshi criteria, Seu-goals.. whether cutevin to ding 9 alls subjjobj apply if more criteria, indin. do cast trely home dis, Livinh woy cave for the study → Only newly diagnosed cover nuclem) I's a speciged, period y tre aux depble Presalanu not. ie control if equal to caves in all aspects other themidis om wowdhe exp els Stinger pes" to asenhe exp Sanna y cond Hospital NE Coveral popul?. b. Selection I contiol Must be similars to cases, except year absene gdls. small sthiraly group. I Cane per 4 contul I conol Longe : I come •Socuces: Eg In a study of convix comces ppt, contud gps may be pte breast cancer, comer gw7. other pts Hospital - take contule where takenca Relatives Siblinge Pabo oft at cavome studies! contule abu in genchi not suitabu wow Neighborhood povem in Sonive Locality Pervon morby is some factory Chulders allenary as come. schad General population To remove lumens conjanding only known It distubule CF equally is a graps. Conjory 2. Matching • To ensure comprovaticity buro care & Control. ey: So Types: ۰ milchig Group m - age, occupth, soved coun 11. Matching in pain - Co coul Cau-contnol ontrol pais makhing Tell •Tor mom 249- 2xy no morests wirport pos ch meg comes 3. Mecument genposure. Ingor Obtand by Internneius, questionnaine, by study pont records ( hospital accord, employment recorel). 4 - Analysiu : 2x2 lable. (Dis-exposure table). Pro-abset-contul (1) Exposure grate Caves = 9/atc. Control blb+d. (1) Estimation grmilk. (strengtes 9 anonation). No incideme, so al. mik. comnol calentale • Estimats & milk is calculated, odds ratio / cross Prochnet natis. OR= ard bc Esimabger. similar to OR. d Interpretation - Exposed shooned swisk og home alls. tima theat g won onposed. → the canoch.. wave thomer Butlay dre than non cop -oddy Comes were exposed to thert the controls. aRf.. is move to the odds of wen exposed. eg.ocp & thromboenb No omociation ware crnaling 1 move Le odels that comes We odds. that the controle exposed to Reu some cu the ivare exposed.hom ey: smoking & HIV / AIDS •ORI-ne asociation Odals thank cover enposed that contul were exposed to is ten that odels Eg: eug physical exercir E, CHD. have exprime, how