WebNov 16, 2024 · 1. The problem. Each observation in my data represents a respondent. Besides the first variable id, which gives an identifier, the other variables (call them A to Z) contain either interesting strings or missing values indicated by ".".I need to create a variable nvals that counts the number of unique strings found for any given respondent … WebApr 10, 2024 · Country specific variables omitted when using country-pair fixed effects in an OLS regression Yesterday, 04:22. Hi, I am new on stata and I am trying to perform a Gravity model analysis of the effects on exports of being a landlocked nation in Sub-Saharan Africa for my bachelors thesis. I have panel data set of the exports from African ...
Count distinct observations per row for several variables - Statalist
WebNov 16, 2024 · The variable nvals now contains the number of distinct observations. Although we chose to tag the first observation in each group, as was specified by _n == 1, we could have done it also for the last observation in each group, for which the code is _n == _N. In this problem, the result is the same. The next complication is that we might … WebThe Stata Journal (2007) 7, Number 4, pp. 571–581 Speaking Stata: Counting groups, especially panels Nicholas J. Cox Department of Geography Durham University Durham City, UK [email protected] Abstract. Counting panels, and more generally groups, is sometimes possible in Stata through a reduction command (e.g., collapse, contract, … prince william co sheriff
How to count rows and columns of a .dta file in Stata?
WebMay 27, 2024 · Now Stata will convert x to a numeric variable, with some missing values. Egen. Skip to the content following this video. ... Once a map is defined you can apply it to any number of variables: just replace the single variable in the label values command above with a list of variables. Suppose you're working with survey data and your … Webcount if catvar==3 Count observations for each value of catvar by catvar: count Menu Data > Data utilities > Count observations satisfying condition Syntax count if in by and collect are allowed; see [U] 11.1.10 Prefix commands. Remarks and examples stata.com … WebAug 31, 2013 · You replace your count variable in all observations by the last value calculated for the count in the last observation. Values are compared with a local macro playerlist. You presumably have no local macro of that name, so the macro is evaluated as empty. ... Stata: Maximum number of consecutive occurrences of the same value … prince william county adc inmate search