mdesc查看缺失值情况
【问题】Stata如何快速查看变量缺失情况?
sum可以看到样本量,但不好看到底缺多少。
【方法】
mdesc可以的
【例子】
ssc install mdesc
use http://www.stata-press.com/data/r11/mheart5 ,clear
(Fictional heart attack data; bmi and age missing)
. mdesc
Variable | Missing Total Percent Missing
----------------+-----------------------------------------------
attack | 0 154 0.00
smokes | 0 154 0.00
age | 12 154 7.79
bmi | 28 154 18.18
female | 0 154 0.00
hsgrad | 0 154 0.00
----------------+-----------------------------------------------
nmissing,查看缺失值
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