Webegen numobs2 = count (sexfreq1), /// by (year marital) / The count function counts the number of non-missing observations of sexfreq1 within each year creating a constant for each case. The second example counts the non-missing values of sexfreq1 within year and within marital status. egen sexmar=group (sex marital), label Web*-Table 6: 删除新创建的子类(稳健性检验) use chem_patents_maindataset, replace ** 删除样本 sort uspto_class grn bys uspto: gen ccc = sum (count) foreach var in count_usa count { qui replace `var' =. if ccc == 0} gen aaa = 1 if ccc == 0 & grn == 1919 bys uspto: egen bbb = max (aaa) drop if bbb == 1 drop if ccc == 0 drop aaa ...
常用的27个Stata命令, 稍微花点时间了解一下_var - 搜狐
WebApr 20, 2012 · bys year: g expendituregrowth=100*(expenditure[_n]-expenditure[_n-1])/expenditure[_n-1] // Also: gen expenditure_gr = (expenditure/expenditure[_n-1] - … Webegen newv3 = total(v1) As above, but calculate total within each level of catvar Generate newv4 equal to the number of nonmissing numeric values across v1, v2, and v3 for each thai mad vejle
Part 4 - Problem Set - POLI 328 - Statistical Analysis - BYU - Studocu
WebAcademic year. 2016/2024. Helpful? 2 0. Share. Comments. Please sign in or register to post comments. Students also viewed. PS2 Part 2 - Problem Set; PS3 Part TWO FO REAL - Problem Set; Lab 12 - Problem Set; S W 3.1 - 3 - Problem Set; S W 31-35 - Problem Set; Syllabus POLI 328 Winter 2024; Other related documents. WebApr 7, 2024 · Matching process, match year by year. use ep a_b 4 _match.dta,clear. // Define treat: a firm ever experienced a closure in any of plants; add treat of hq in the original sample. // Remove hq state if the state has no treat. replac e c_year =. if c_year ==0. bys hq: egen t_ close=count (treat) drop i f t_ close==0. drop t _ close. Webcd C: \ Download use tmt_figureinfo, clear append using tmt_figureinfo1 * keep if IsMTMT == 1 keep if regexm (Reptdt, "12-31") g year = substr (Reptdt, 1, 4) g Woman = Gender == "女" bys Stkcd year Woman: egen mean = mean (TotalSalary) keep Stkcd year Woman mean duplicates drop drop if m ==. destring *, force replace compress spread W m ... sync ps5 controller bluetooth