st: if programming command

[lou apicella <louis_apicella@yahoo.com>]

Hello Statalisters,

I'm trying to convert some logical statements into nested if statements. I feel the two statements below should give the same result but they do not.  What am I do wrong here?

Thanks in advance.

Lou.

replace syphilis=1 if visit==1 & lbcd=="SYP_RPR" & (lbresc!="POSITIVE 1:128" | lbresc!="POSITIVE 1:16")



if visit==1 {
    if lbcd=="SYP_RPR" & (lbresc!="POSITIVE 1:128" | lbresc!="POSITIVE 1:16" ) {
                replace syphilis==1
     }
}


      
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