[EpiData-list] Number of variables not missing

Hello,

In EPIDATA ENTRY or ANALYSIS, to calculate an mean, it is easy to calculate a sum of several variables (the numerator)(even if some are missing), but I don't know calculate the number of non-missing variables (the denominator) as the command "NBVAL" in EXCEL. Thank you for helping me.

Bernard BRANGER, Nantes, France