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Need info on the betaeff and vdsat parameters found from simulation

jdp721

Hi.

Can you please tell me the interpretation of the betaeff and vdsat parameters obtained from Cadence ADE simulation using " Results -> Print -> DC Operating Points" ?

I am asking this because in a simulation of mine, the displayed results are as below:
betaeff 3.837m
...
ids 13.55u
...
vdsat -113.3m
vgs -1.164
vth -1.104
This shows that:
1. the shown vdsat is not equal to (vgs-vth) !
2. using the equation: ids=(beta/2)*(Vgs-Vth)² and using the shown betaeff, the result is ids=6.9u, while the display result is 13.55u, is it that the displayed bettaeff=(beta/2)? 
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