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zfszcl
2007 Dec 06
0
coxme() random effect syntax
...d like to run a Cox proportional hazards regression on crayfish
dislodgement at different water velocities by crayfish size class and
substrate (rock) type. Additionally, there is a covariate variable, rock
movement that may be influencing crayfish dislodgment. So...
I have crayfish size class (CFSZCL) and substrate type (SUBSZ) as fixed
factors influencing the dislodgment of crayfish at different water
velocities (SLIPVEL). Thus, I am currently using the call:
coxph(Surv(SLIPVEL, FREEDOM) ~ CFSZCL + SUBSZ + CFSZCL:SUBSZ, data =
data.table)
However, I would like to add rock movement (BEDLOA...