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VFE- MEL expression for either or IF statement?

CPS, C-EMR, PM

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Jude

(@judea)

Posts: 91

Estimable Member

Topic starter

Hi all, I am developing STOP-Bang questionnaire form in VFE. I am missing something because I can't get this function to work

{ IF DOCUMENT.BANGSTORE >2 AND DOCUMENT.BANGSTORE <5 then
DOCUMENT.BANGRESULT = "OSA - Intermediate Risk"
else
IF DOCUMENT.BANGSTORE >=2 AND DOCUMENT.BODYMASS =Yes then
DOCUMENT.BANGRESULT = "OSA - High Risk"
else
IF DOCUMENT.BANGSTORE >=2 AND DOCUMENT.FOR_MALE =Yes then
DOCUMENT.BANGRESULT = "OSA - High Risk"

else ""
endif endif endif}

It is only taking the first statement. it does not recognize the other two statements if other answers are yes.

Any thoughts?

Thanks, Jude

Posted : September 26, 2018 3:58 am

joeg1962

(@joeg1962)

Posts: 843

Noble Member

Just thinking a bit about this... and wondering if you need to be doing VAL on those numeric document variables?

{ IF VAL(DOCUMENT.BANGSTORE) >2 AND VAL(DOCUMENT.BANGSTORE) <5 then ...

Also, the text for Yes probably needs to be in quotes "Yes"

Posted : September 26, 2018 4:20 am

Jude

(@judea)

Posts: 91

Estimable Member

Topic starter

Still doing the same thing with VAL or without VAL. It is only recognizing the first IF sentence.

Posted : September 26, 2018 4:42 am

joeg1962

(@joeg1962)

Posts: 843

Noble Member

Perhaps simplify - remove the 3rd if, and change the 2nd if to just say "two".

That way, you can make sure it is analyzing to that point.

Once there, use a simple if - like if 2>1 then "TWO"

Simply step through it all.

And one last thing, sometimes manually retyping helps, eliminating a random and unintended character. By the way, assuming you are using the VAL and "quotes", the logic looks correct to me. Although, it is obviously not your true cut/paste.

Posted : September 26, 2018 4:52 am

amaskey

(@amaskey)

Posts: 88

Estimable Member

if document.bangstore is 3 or 4, it will always execute only the first statement and ignore the other two statements

Posted : September 26, 2018 6:44 am

joeg1962

(@joeg1962)

Posts: 843

Noble Member

That is correct -> if bangstore is 3 or 4 it will ALWAYS stop there. It meets the first rule so NEVER gets to any succeeding rules. If you want a different result, then perhaps re-order your statements?

Posted : September 26, 2018 7:07 am

ljk001

(@ljk001)

Posts: 5

Active Member

Yes, reordering the statements will work . Code the document.bangstore is 3 or 4 as the 3rd if then else statement.

Posted : September 26, 2018 8:24 am

chaddix

(@chaddix)

Posts: 177

Estimable Member

A few things I noticed (my attempt at a re-write is below):
1. Rather than IF/ELSE IF/ELSE IF, I recommend a cond case endcond statement. It really helps simplify the code and makes it easier to think through.

2. By default, I think MEL treats all DOCUMENT. variables as strings, so I think you need to use VAL(DOCUMENT.BANGSTORE) in evaluations.

3. When checking for value = yes, you need to put the Yes in double-quotes. I also use a double == for evaluations like this one, but that could just be personal preference.

{
cond
case VAL(DOCUMENT.BANGSTORE) >2 AND VAL(DOCUMENT.BANGSTORE) =2 AND DOCUMENT.BODYMASS == "Yes": DOCUMENT.BANGRESULT = "OSA – High Risk"
case VAL(DOCUMENT.BANGSTORE) >=2 AND DOCUMENT.FOR_MALE == "Yes": DOCUMENT.BANGRESULT = "OSA – High Risk"
else: //do nothing
endcond
}

Posted : September 26, 2018 9:22 am

DavidShower

(@davidshower)

Posts: 1255

Noble Member

So here's what I found about the scoring on a quick web search:

For general population

Low risk of OSA: Yes to 0-2 questions

Intermediate risk of OSA: Yes to 3-4 questions

High risk of OSA: Yes to 5-8 questions

or Yes to 2 or more of 4 STOP questions + male gender

or Yes to 2 or more of 4 STOP questions + BMI > 35 kg/m2

or Yes to 2 or more of 4 STOP questions + neck circumference (17”/43cm in male, 16”/41cm in female)

So I would take Chaddix's suggestion and write this as COND..CASE..ELSE..ENDCOND. Conditional statements like this quit executing as soon as one of the CASE statements is true, so I would do a CASE statement for each High Risk scenarios first, then your Intermediate Risk, and Low Risk would be assigned as the ELSE.

Posted : September 28, 2018 12:20 pm

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