指令:capture drop doses*
_pctile dose, percentile(5 35 65 95)
ret list
mkspline doses=dose, knots('=r(r1)' '=r(r2)' '=r(r3)' '=r(r4)') cubic displayknots
glst logrr doses* , se(se)cov(peryears cases)pfirst(study type) eform
跑出来的结果是:
capture drop doses*
.
. _pctile dose, percentile(5 35 65 95)
.
. ret list
scalars:
r(r1) = 5
r(r2) = 6.449999809265137
r(r3) = 8.449999809265137
r(r4) = 9.899999618530273
.
. mkspline doses=dose, knots('=r(r1)''=r(r2)''=r(r3)''=r(r4)') cubic displayknots
knots() invalid -- invalid numlist
r(121);
.
. glst logrr doses* , se(se)cov(peryears cases)pfirst(study type) eform
variable doses* not found
r(111);
求问各位大神怎么解决,谢谢!


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