# Data dropout during the longitudinal experiment

I perform a longitudinal experiment and I don t know how to deal with the data dropouts. I use STATISTICA Statsoft but Im not a professional neither in statistics nor in programming. So the question may seem to be not very smart.

I make a lifespan test on mice during which at stated intervals I measure some parameters since animals entrance in experiment till their death from age. I guess it would be ok to use factorial ANOVA for repeated measurements if not dying of participants. How can I deal with this issue? If there is a software package for the multiple imputation could you tell me about it? Is it possible to use hierarchical ANOVA (to state animals as a random factor)?

Could you help me? Any advice, protocol or recommendation would be very helpful!