The system variable_nisfixedin the sense that it denotes the number of the current observation independently of yourifcondition. What you are asking for with your code is acounterthat takes on the value of the number of the observationifit is not missing. This is different from the count of...
S458921 COUNTVALUES: Stata module to list counts of integer values across variables by Nicholas J. Cox S458920 INLIST2: Stata module to create an inlist() dummy, without the inlist() limitations by Matteo Pinna S458919 SONGBL: Stata module to search and share Stata resources and blogs by...
* 用分类变量检查分类变量 /*marriedornot 表示是否结过婚(0-1 变量), marriednow 表示当下是否处于婚姻状态(0-1 变量)*/ clear input marriedornot marriednow 1 1 1 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 end tabulate marriednow marriedornot,missing count if marriednow==1 & marriedor...
inspect price weight length tabstat:表格形式的统计描述,其选项包括: by(varname):对变量varname 的所有类别分别进行描述统计; statistics(statname) :设定需要的统计量,statname 包括mean、median、count (观测值个数)、sum、max、min 等; columns(variables|statistics):variables 表示列按变量排序,statistics...
drop if missing(corrname1) * Generating total non missing count and P-Values generate N = `N' generate double p = min(2 * ttail(N - 2, abs_corr * sqrt(N - 2) / sqrt(1 - abs_corr^2)), 1) * Generate stars generate stars = "*" if p <= 0.1 & p > 0.05 ...
2. tab x1 x2 / hist x1 / sum x1 x2 / *kdensity x1 主要内容:观察数据的特征 查...
/* Missing values */ clear set obs 10 gen index = _n gen group = "male" if index<=5 replace group = "" if index>5 set obs 15 count if missing(index) replace index = _n if missing(index) count if missing(group) replace group = "female" if missing(group) ...
对样本进行随机筛选:sample 50 在观测案例中随机选取50%的样本,其余删除 sample 50,count 在观测案例...
gen/egen:最常用的建立函数的命令,这两个不同之处在于gen一般是初等函数,egen的函数会复杂一些.常用的函数包括数学函数和其他函数,比如count/tag之类,建议直接到菜单里data下create data的create new variable 4、或create new variable(extended)直接生成函数,会方便的多。mean/abs/sqrt/max/min/sum/sd:常用数学...
See[MI]Glossary for a definition of terms.To import data that already have imputations for the missing values(do not mi set the data)mi import import mi data mi export export mi data to non-Stata application Once data are mi set or mi import ed mi query query whether and how mi ...