How to factor year in to my expression

[MIrlam]

Hi all

I'm hoping someone can help with this. My dax expression is:

LOS Days (AdmissionMonth) = IF(MONTH('Admissions and Discharges'[DateAdmitted])>=MONTH('Admissions and Discharges'[DCDateForOBD]),DATEDIFF('Admissions and Discharges'[DateAdmitted],'Admissions and Discharges'[DCDateForOBD],DAY),DATEDIFF('Admissions and Discharges'[DateAdmitted],ENDOFMONTH('Admissions and Discharges'[DateAdmitted].[Date]),DAY))

which basically counts the length of time someone has stayed if they are admitted one month and discharged the next. This works fine except for January as it currently does not consider the year - is there a way i can easily edit this to make that work?

thanks

[AlexisOlson · Accepted solution]

There might be a way to make this quite a bit simpler.

Is this logic correct?

Column =
VAR StartDate = 'Admissions and Discharges'[DateAdmitted]
VAR EndDate =
    MIN ( 'Admissions and Discharges'[DCDateForOBD], EOMONTH ( StartDate, 0 ) )
RETURN
    DATEDIFF ( StartDate, EndDate, DAY )

[AlexisOlson · Accepted solution]

There might be a way to make this quite a bit simpler.

Is this logic correct?

Column =
VAR StartDate = 'Admissions and Discharges'[DateAdmitted]
VAR EndDate =
    MIN ( 'Admissions and Discharges'[DCDateForOBD], EOMONTH ( StartDate, 0 ) )
RETURN
    DATEDIFF ( StartDate, EndDate, DAY )

[MIrlam]

That is brilliant, thank you!

[VahidDM]

Hi @MIrlam 

Try this:

LOS Days (AdmissionMonth) =
IF(
    YEAR( 'Admissions and Discharges'[DateAdmitted] )
        && MONTH( 'Admissions and Discharges'[DateAdmitted] )
            >= YEAR( 'Admissions and Discharges'[DCDateForOBD] )
        && MONTH( 'Admissions and Discharges'[DCDateForOBD] ),
    DATEDIFF(
        'Admissions and Discharges'[DateAdmitted],
        'Admissions and Discharges'[DCDateForOBD],
        DAY
    ),
    DATEDIFF(
        'Admissions and Discharges'[DateAdmitted],
        ENDOFMONTH( 'Admissions and Discharges'[DateAdmitted].[Date] ),
        DAY
    )
)

If this post helps, please consider accepting it as the solution to help the other members find it more quickly.
Appreciate your Kudos!!
LinkedIn: www.linkedin.com/in/vahid-dm/

[MIrlam]

Thank you, that has helped with the Jan / Dec overlap as highlighted below. However I now have an issue where the datediff isn't calculating as I think it should? As far as I can see the dax is correct but i get this return when the months for dateadmitted and d/cdateforOBD are the same

Column = IF( YEAR( 'Admissions and Discharges'[DateAdmitted] ) && MONTH( 'Admissions and Discharges'[DateAdmitted] ) >= YEAR( 'Admissions and Discharges'[DCDateForOBD] ) && MONTH( 'Admissions and Discharges'[DCDateForOBD] ), DATEDIFF( 'Admissions and Discharges'[DateAdmitted], 'Admissions and Discharges'[DCDateForOBD], DAY ), DATEDIFF( 'Admissions and Discharges'[DateAdmitted], ENDOFMONTH( 'Admissions and Discharges'[DateAdmitted].[Date] ), DAY ) ) 

Thanks

[VahidDM · Accepted solution]

Hi @MIrlam 

Try this:

Column = 
IF(
    YEAR( 'Admissions and Discharges'[DateAdmitted] )
        & MONTH( 'Admissions and Discharges'[DateAdmitted] )
            >= YEAR( 'Admissions and Discharges'[DCDateForOBD] )
        & MONTH( 'Admissions and Discharges'[DCDateForOBD] ),
    DATEDIFF(
        'Admissions and Discharges'[DateAdmitted],
        'Admissions and Discharges'[DCDateForOBD],
        DAY
    ),
    DATEDIFF(
        'Admissions and Discharges'[DateAdmitted],
        ENDOFMONTH( 'Admissions and Discharges'[DateAdmitted].[Date] ),
        DAY
    )
)

Output:

If this post helps, please consider accepting it as the solution to help the other members find it more quickly.
Appreciate your Kudos!!
LinkedIn: www.linkedin.com/in/vahid-dm/

[MIrlam]

perfect, works now thanks!