Statistical outcomes can be manipulated as well , for example large numbers of participants can be used and trials overpowered .
Small difference cause significant effects or inclusion criteria can be changed to include those are most likely to respond to a treatment .
Statistical outcomes can be manipulated as well , for example large numbers of participants can be used and trials overpowered so that small difference cause significant effects or inclusion criteria can be changed to include those are most likely to respond to a treatment .