calculate age from date in character format

abraham1 — Tue, 23 Aug 2022 08:06:29 GMT

Hi All,

From the below data, I want to calculate age based on the condition like below

if age unit is year, then new_Age=age

if age unit is month, then new_age should be converted to year

if age and unit is blank, then value of new_age will be calculated by subtracting brthdtc from rficdtc .

When I write the logic, it is working but getting below message in log file. can you please help me what mistake I am doing

NOTE: Character values have been converted to numeric values at the places given by: (Line):(Column).

Can you please help me how to proceed. Below is the sample of data

data test;
input pid age ageu $ rficdtc $19. brthdtc $10. ;
cards;
101 23 Year 2012-12-09T10:51:00 1987-07-19
102 230 Mon 1999-12-11 1987-07-19
103 113 Mon 1995-12-11 1992-07-19
104 . . 2016-12-09T10:51:00 1995-07-19
;
run;
proc sql;
create table test1 as
select pid, age, ageu,
put(input(substr(strip(rficdtc),1,10),yymmdd10.),yymmdd10.) as rficdtc,
strip(brthdtc) as brthdtc 
from test;
quit;
data test2;
set test1;
if ageu='year' THEN NEW_AGE=AGE;
	else if ageu='Mon' THEN NEW_AGE=round(AGE/12, 0.01);
	else if ageu not in ('year', 'Mon')  and RFICDTC ne '' and BRTHDTC ne '' then NEW_AGE=intck('year', RFICDTC, BRTHDTC);
	else new_age=.;
run;

Re: calculate age from date in character format

rudfaden — Tue, 23 Aug 2022 08:25:20 GMT

the intck function takes a date not a string.

data test2;
set test1;
if ageu='Year' THEN NEW_AGE=AGE;
	else if ageu='Mon' THEN NEW_AGE=round(AGE/12, 0.01);
	else if ageu not in ('Year', 'Mon')  and RFICDTC ne '' and BRTHDTC ne '' then NEW_AGE=intck('year', input(RFICDTC,yymmdd10.), input(BRTHDTC,yymmdd10.));
	else new_age=.;
run;

also notice that strings are case sensitive. You want 'Year' not 'year'

topic Re: calculate age from date in character format in SAS Programming

calculate age from date in character format

Re: calculate age from date in character format