V analizi, ki je uporabila korekcijo možne pristranosti zaradi nenačrtovanih ocenjevanj, je bil delež napredovanja bolezni ali smrti pri bolnikih, ki so dobivali Vectibix, za 40 % manjši od tistega pri bolnikih, ki so dobivali NPO [ razmerje ogroženosti = 0, 60, (95 % IZ: 0, 49, 0, 74), stratificirani log- rang test: p < 0, 0001 ].
In an analysis adjusting for potential bias from unscheduled assessments, the rate of disease progression or death in patients who received Vectibix was reduced by 40 % relative to patients that received BSC [ Hazard Ratio = 0.60, (95 % CI 0.49, 0.74), stratified log-rank p < 0.0001 ].