Hi folks. I'm attempting to run a conditional (firm) fixed effects model in Stata 13.0, but keep getting the following error message:

"4733 (group size) take 292 (# positives) combinations results in numeric overflow; computations cannot proceed."

Can anyone tell me what this exactly means? My code is as follows (with varnames blinded for legal reasons):

clogit depvar indvar i.year `controls', group(firm) cluster(firm)

I get the same response using xtlogit

FYI: I have 1500 firm groups and approximately 1.6 million total observations.

Thanks,

Lamar

"4733 (group size) take 292 (# positives) combinations results in numeric overflow; computations cannot proceed."

Can anyone tell me what this exactly means? My code is as follows (with varnames blinded for legal reasons):

clogit depvar indvar i.year `controls', group(firm) cluster(firm)

I get the same response using xtlogit

FYI: I have 1500 firm groups and approximately 1.6 million total observations.

Thanks,

Lamar

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