st: drop in 1925486/1 leads to: Obs. nos. out of range, r(198)

[- <mc_allister@gmx.de>]

Hello,

I use Stata Version 8 and do not know what I am doing wrong:

The command:

. drop in 1925486/1

leads to the following error:

Obs. nos. out of range
r(198);

Does anyone know what is wrong?

Thanks a lot.
Silke
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