stata repeated time values in sample Stata是一种数据分析工具,它可以用于处理和分析样本中的重复时间值。在处理样本数据时,一些数据值经常会多次出现,例如重复测量数据、多次采样数据等。因此,为了更详细地分析这些数据,必须对重复时间值进行处理。 在Stata中,有几种方法可用于处理样本中的重复时间值。其中,最常见...
应在先告诉 Stata 那个是时间变量。完整代码如下: sysuse sp500, clear tsset date gen open_lag1=l1.open 对于panel 数据,使用 tsset year 语句会报错(错误信息显示为:stata repeated time values in sample)。因为对于面板数据而言,需要两个维度的标识才能确定每一行观察值的位置,使用 tsset 时要求 year 值不...
我知道了。repeated time values in sample是有重复值,只要使用命令duplicates drop year,force删除多余的...
【Stata tips: mata数据的输入与输出】 首先如何将Stata的数据输入mata:st_view()和st_data。这两个命令的作用是一样的,但是从效果上还有细微差别。st_view()可以生成一个当前在内存中的Stata数据的矩阵,你可以对这些矩阵进行任何运算,但是当Stata的数据改变以后,这个矩阵也会改变;而st_data()则不然,他会生成...
FromYoshiro Nagao <dengue_aedes@yahoo.co.jp> Tostatalist@hsphsun2.harvard.edu Subjectst: repeated time values in sample DateMon, 30 Jan 2006 22:50:12 +0900 (JST) Dear all, I insheeted a new data file, and tried to "tsset" a variable: *** . tsreport time variable not set, use ...
I'm really new on Stata and I'm trying to work with a panel data. I know that, to set a panel data, one uses xtset id year, but when I try to use this command Stata returns the error "repeated time values within panel (r451)". I know that this happens because I have the ...
tsset sequential_month > repeated time values in sample > r(451); > *** > > How can I declare that a variable > represents "time"? * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www....
This inconsistency could be due to several factors such as (1) small sample size; (2) differences in sampling methods; (3) non-reliable measures of iron status; (4) results based on a single measurement of iron status (which can fluctuate markedly within individuals over time); (5) ...
All analyses were performed in Stata version 15.1 (StataCorp). Results Figure 1 illustrates the cohort development from all ED visits between April 1, 2020, and September 30, 2021. There was a total of 12 848 patients with 16 987 ED encounters (mean [SD] age, 53 [20] years; 9714...
tsset sequential_month > > repeated time values in sample > > r(451); > > *** > > > > How can I declare that a variable > > represents "time"? > * > * For searches and help try: > * > http://www.stata.com/support/faqs/res/findit.html > * http://www.stata.com/suppo...