Dear all,
Apologies if this question seems to be a repetition of a previous question. I had made some errors in the title, hence posting the corrected question again.
I am getting (error1400): combinations results in numeric overflow; computations cannot proceed, while performing xtlogit, fe in stata with 5738 observations (about 1900 individuals X 3 rounds).
Please consider the following sample data set for this purpose
Code:
 input str3 ID byte str1 round byte str1 hi byte str1 acc byte str1 inf byte str1 shock

            ID      round         hi        acc        inf      shock
  1. IN1 1 1 0 1 1
  2. IN1 2 1 1  1 1
  3. IN1 3 0 0 1 1
  4. IN2 1 1 1 0 1
  5. IN2 2 0 0 1 0
  6. IN2 3 1 0 0 0
  7. end

. list

     +--------------------------------------+
     |  ID   round   hi   acc   inf   shock |
     |--------------------------------------|
  1. | IN1       1    1     0     1       1 |
  2. | IN1       2    1     1     1       1 |
  3. | IN1       3    0     0     1       1 |
  4. | IN2       1    1     1     0       1 |
  5. | IN2       2    0     0     1       0 |
     |--------------------------------------|
  6. | IN2       3    1     0     0       0 |
     +--------------------------------------+
I set up the panel as follows:

Code:
encode ID, gen(ID1)
drop ID
rename ID1 ID
xtset round ID
however when I peformed
Code:
xtlogit hi inf shock, fe
I got the following
Code:
1,913 (group size) take 1,640 (# positives) combinations results in numeric overflow; computations cannot proceed r(1400)
from the original data set

The same regression with
Code:
xtlogit acc inf shock, fe
returned the regression results in my original data set.

I am confused as to why with only 5738 observations I'm getting numeric overflow. Also, please suggest a way to resolve this problem.

Thanks and Regards