Integral, Measure and Martingale

2018年6月4日星期一

NOTES ON ACCURACY OF POINT PREDICTIONS IN SURVIVAL ANALYSIS

2018年5月21日星期一

Producing graphs of the survival and baseline hazard function after Cox regression

When only `plots=survival` is specified on the `proc phreg` statement, SAS will produce one graph, a “reference curve” of the survival function at the reference level of all categorical predictors and at the mean of all continuous predictors.

https://stats.idre.ucla.edu/sas/seminars/sas-survival/

2018年4月18日星期三

Heine–Borel theorem

https://ipfs.io/ipfs/QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco/wiki/Heine%E2%80%93Borel_theorem.html

2018年4月8日星期日

2018年2月28日星期三

A SAS macro to rename all variable names in a data set

Data one;
U_2=1;
V_3=2;
X_2=3;
Y_2=4;
Z_3=5;
Run;

options macrogen mprint mlogic;
%macro rename(lib,dsn);
options pageno=1 nodate;
proc contents data=&lib..&dsn;
title "Before Renaming All Variables";
run;
proc sql noprint;
select nvar into :num_vars
from dictionary.tables
where libname="&LIB" and
memname="&DSN";
select distinct(name) into :var1-
:var%TRIM(%LEFT(&num_vars))
from dictionary.columns
where libname="&LIB" and
memname="&DSN";
quit;
run;
proc datasets library=&LIB;
modify &DSN;
rename
%do i=1 %to &num_vars;
&&var&i=%substr(&&var&i., 1, %length(&&var&i.)-2)
%end;
;
quit;
run;
options pageno=1 nodate;
proc contents data=&lib..&dsn;
title "After Renaming All Variables";
run;
%mend rename;
%rename(WORK,ONE);/***Note the library and database name should be all in CAPITAL LETTERS)****/