Cel Sci Corporation (CVM)

[przgwxl]

Fosco: Question on your survival fits

Fosco I get the exponential model, but you add a parameter and do not require the survival to be 100% at t = 0. Is there a reason? When I add the point survival = 100% at t=0 I get poor fits - basically the exponential model becomes a one parameter model and the fit is poor.

I checked a Weibull model, including the constraint that survival probability = 100% at t=0. It does a lot better.

I haven't checked to see what difference it makes in the spreadsheet results, that would be the next step. Not hard, but I'd like to see if it is worth doing.