d STB-19 ssa4. Ex post tests and diagnostics for a prop. hazards model. d STB insert by Willam H. Rogers, Stata Corporation. d Support: FAX 409-696-4601 d After installation, see help ^phtest^. f ssa4/phscore.ado f ssa4/phscore.hlp f ssa4/phtest.hlp f ssa4/phtest1.ado f ssa4/phtest1.hlp f ssa4/phtest2.ado f ssa4/phtest2.hlp