Stata testparm
-testparm- performs Wald tests on regression coefficients.
See also -test-.
Contents
Usage
-testparm- is identical to -test- except that it only tests for equivalence to 0. Because it does not allow for non-zero tests, all arguments passed to -testparm- are known to be coefficient names, so syntax is generally simpler.
The following two are equivalent:
test (2.region = 0) (3.region = 0) (4.region = 0) testparm i(2/4).region
The following two are also equivalent:
test (_b[age] = 0) (_b[c.age#c.age] = 0) testparm c.age c.age#c.age