Stata Commands for Module 9
Chi-square in Stata
For this example, we use “tabi” command, one of the so-called “immediate” commands
in Stata. The “immediate” commands apparently allow you to conduct analyses without
having an underlying dataset. According to Stata Help, “tabi displays the r x c table
using the values specified; rows are separated by '\'.” By putting “, chi2” at the end, you
are requesting that Stata include a chi-square statistic. (You can also just type “chi”.)
. tabi 776 401 307 \ 3306 1456 1053 \ 1667 927 789, chi2
| col
row | 1 2 3 | Total
-----------+---------------------------------+----------
1 | 776 401 307 | 1,484
2 | 3,306 1,456 1,053 | 5,815
3 | 1,667 927 789 | 3,383
-----------+---------------------------------+----------
Total | 5,749 2,784 2,149 | 10,682
Pearson chi2(4) = 57.9348 Pr = 0.000
Another example in Stata: Drinking by Religious Denomination
. * in Stata
. use "D:\soci708\data\survey2b.dta", clear
. tab drinks ...
. label define noyes 0 "No" 1 "Yes"
. label values drinks noyes
. tab drinks
DRINKS | Freq. Percent Cum.
------------+-----------------------------------
No | 52 20.31 20.31
Yes | 204 79.69 100.00
------------+-----------------------------------
Total | 256 100.00
. tab religion
RELIGION | Freq. Percent Cum.
------------+-----------------------------------
1 | 133 51.95 51.95
2 | 46 17.97 69.92
3 | 23 8.98 78.91
4 | 52 20.31 99.22
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