How to obtain overall P-value for categorical variable with >2 categories

[Ange Tj]

I am doing Cox multivariable modelling and have my final model (see below). However, two of the variables are categorical and have >2 categories ('age' and 'interact'). How can I find the overall p-value for these two variables (rather than p value for each level vs reference)?

stcox ldh surgery i.age i.function

	HR 95% CI	p
ldh	0.50 (0.40-0.58)	0.000
surgery	0.91 (0.77-0.98)	0.048
age 1 2 3	0.55 (0.33-0.75) 0.80 (0.48-1.05) 0.88 (0.51-1.10)	0.004 0.09 0.11
function 1 2	0.55 (0.33-0.88) 1.30 (0.77-2.21)	0.02 0.33

Thanks in advance

[Joseph Coveney]

You can try something like

testparm i.age
testparm i.function
help testparm

[Ange Tj]

Thanks very much Joseph - appreciate your help!