WebMay 18, 2011 · bysort group_id (var_to_rank): gen desired_rank = sum (var_to_rank != var_to_rank [_n-1]) Once data are sorted on var_to_rank then when values differ from previous values at the start of each block of … WebDec 10, 2013 · bysort HHID : egen hhage = tota (age * (Personid == "P1")) This solution assumes that Personid is a string variable. If it is a numeric variable, the expression Personid == "P1" should be replaced by something like Personid == 1 using 1 or whatever other integer code is appropriate. There is one head of household per household.
Stata FAQ: Sampling clusters, not individuals
WebApr 24, 2024 · bysort: 该变量非常有用,建议大家要重点掌握 ,分组排序常用变量,我举一个例子来说明该命令的用法,假如说你现在对一些城市的居民收入做了微观统计,但在做面板回归时,如果一个城市出现了多个收入数据,此时无法进行回归,这个时候你就需要对这些微观 ... WebJun 5, 2012 · st: RE: keep only one observation. Lars, To get a sequence number within ID and date you'd want bysort id date_var : gen seq=_n The syntax you used makes sure that date_var is sorted within id but doesn't group by date when assigning seq. If I understand you correctly, you actually want to define groups in terms of dates within IDs. To keep ... primary anesthesia visalia
st: RE: keep only one observation - Stata
WebNov 16, 2024 · Knowing how to do it using basic principles may appeal to you. First, keep a copy of the sort order: gen long order = _n Then select one observation from each household: egen select = tag (hhid) Now produce some random numbers and sort : gen rnd = runiform () sort select rnd WebFeb 7, 2024 · bysort stockid (year): replace ticker=ticker[1] if _n>1. The above command states that within each stockid group (that has been sorted by ascending order of year), … Webbysort wave commid hhid line: egen dup=cond (_N>1, _n, 0) br if dup~=0 bys 你认为的可以唯一定义一个样本的变量: egen a=_N tab a 可以看到重复样本,a表示频率。 面板数据中生成滞后变量可以直接用lag命令,若要生成一个变量的lead,应该怎样弄? 直接调用窗口来解决呀,在统计菜单中,panel data 中,linear regression 里面的 response valuable, … primary anesthesia procedure cpt code