![]() count if price > 5000 count number of missing/unique values Stata has 6 data types, and data can also be missing: byte true/false display the unique values for rep78 Explore Data _N creates a running count of the total observations per group Stata has 6 data types, and data can also be If my panel data contain studies appended from 10 different data sets, there are certain variables which shows duplicate values if I calculate incidence or prevalence of an event. ![]() First, de ne indicator variables that mark the beginning of each spell. Stata count unique values Counting with by.
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