Ib txoj kev tshawb fawb yog ib qho kev soj ntsuam uas tus kws tshawb fawb soj ntsuam cov xwm txheej thiab tsis tswj lawv. Hauv luv luv, Yog tias koj xav ua pov thawj qhov kev sib raug zoo ntawm kev kho mob thiab qhov tshwm sim, siv qhov kev sim ntsuas randomized. Yog tias randomization tsis yog kev coj ncaj ncees lossis ua tau, kev kawm pawg yog koj qhov kev xaiv thib ob.
Puas kev kawm pab pawg muaj kev sib tw?
Randomized controlled trials (RCT) yog suav tias yog qhov zoo tshaj plaws, txoj kev nruj tshaj plaws ntawm kev tshawb xyuas cov tshuaj tiv thaiv, xws li cov tshuaj tshiab, tab sis nws tsis tuaj yeem siv los kuaj seb qhov ua rau muaj kab mob. Cov kev tshawb fawb hauv pawg yog kev soj ntsuam Cov kws tshawb fawb soj ntsuam qhov tshwm sim yam tsis muaj kev cuam tshuam.
Puas yog kev tshawb fawb pawg randomized tswj kev sim?
Nco ntsoov tias kev kawm sib koom ua ke zoo ib yam li RCT tshwj tsis yog tias kev cuam tshuam hauv RCT yog tus kws tshawb nrhiav tswj hwm, thaum kev cuam tshuam hauv kev tshawb fawb pawg yog qhov tshwm sim tshwm sim. Hauv kev tshawb fawb pawg, nws tau xav tias qhov kev kawm thaum pib ntawm txoj kev kawm yog "tsis muaj kab mob" ntawm qhov txiaj ntsig ntawm kev txaus siab.
Puas muaj qhov sib txawv uas tshwm sim hauv kev kawm pawg muaj lossis tsis yog?
Kev sib piv nrog RCT, hauv kev tshawb fawb hauv pawg no raug tsis raug cai. Hloov chaw, qhov xwm txheej raug kis tau los ntawm lub caij nyoog (xws li genetic polymorphisms) lossis los ntawm kev xaiv (xws li haus luam yeeb).
Cov kev tshawb fawb pab pawg puas siv txoj haujlwm random?
Peb yuav pom tias kev cuam tshuam kev tshawb fawb nrog coob tus ntawm cov ntsiab lus random muab rau ob lossis ntau pab pawg kho mob (tshwj xeeb) feem ntau tuaj yeem ua tiav qhov no kom cov pab pawg raug muab sib piv muaj qhov sib luag ntawm hnub nyoog, kev sib deev, kev haus luam yeeb, kev tawm dag zog lub cev, thiab lwm yam, tab sis random assignment tsis tshwm sim nyob rau hauv kev tshawb fawb cohort
