RORXU004.m

RORXU004 ;HCIOFO/SG - REPORT UTILITIES (STATISTICS) ; 9/23/03 10:51am

 ;;1.5;CLINICAL CASE REGISTRIES;;Feb 17, 2006

 ;

 Q

 ;

 ;***** CALCULATES THE MEDIAN VALUE OF THE CROSS-REFERENCE

 ;

 ; XREFNODE      Root node of the old-style cross-reference

 ; NUM           Total number of elements in the array

 ;

 ; Return Values:

 ;       ""  Error (or an empty array)

 ;     '=""  Median Value

 ;

XREFMDNV(XREFNODE,NUM) ;

 Q:NUM'>0 ""

 N FLT,FLTL,I,MV,N,PI,VPOS

 S FLTL=$L(XREFNODE)-1,FLT=$E(XREFNODE,1,FLTL)

 S N=(NUM+1)\2,VPOS=$QL(XREFNODE)+1

 ;--- Find the median value

 S PI=XREFNODE

 F I=1:1:N  S PI=$Q(@PI)  Q:$E(PI,1,FLTL)'=FLT

 Q:$E(PI,1,FLTL)'=FLT ""

 ;--- Calculate median value if NUM is even

 S MV=$QS(PI,VPOS)

 I '(NUM#2)  D  Q:I="" ""  S MV=(MV+I)/2

 . S PI=$Q(@PI),I=$S($E(PI,1,FLTL)=FLT:$QS(PI,VPOS),1:"")

 Q MV

--- Routine Detail   --- with STRUCTURED ROUTINE LISTING ---RORXU004   850     printed  Feb 18, 2025@23:11:30                                                                                                                                                                                                     Page 2

RORXU004  ;HCIOFO/SG - REPORT UTILITIES (STATISTICS) ; 9/23/03 10:51am

 +1       ;;1.5;CLINICAL CASE REGISTRIES;;Feb 17, 2006

 +2       ;

 +3        QUIT 

 +4       ;

 +5       ;***** CALCULATES THE MEDIAN VALUE OF THE CROSS-REFERENCE

 +6       ;

 +7       ; XREFNODE      Root node of the old-style cross-reference

 +8       ; NUM           Total number of elements in the array

 +9       ;

 +10      ; Return Values:

 +11      ;       ""  Error (or an empty array)

 +12      ;     '=""  Median Value

 +13      ;

XREFMDNV(XREFNODE,NUM) ;

 +1        if NUM'>0

               QUIT ""

 +2        NEW FLT,FLTL,I,MV,N,PI,VPOS

 +3        SET FLTL=$LENGTH(XREFNODE)-1

           SET FLT=$EXTRACT(XREFNODE,1,FLTL)

 +4        SET N=(NUM+1)\2

           SET VPOS=$QLENGTH(XREFNODE)+1

 +5       ;--- Find the median value

 +6        SET PI=XREFNODE

 +7        FOR I=1:1:N

               SET PI=$QUERY(@PI)

               if $EXTRACT(PI,1,FLTL)'=FLT

                   QUIT 

 +8        if $EXTRACT(PI,1,FLTL)'=FLT

               QUIT ""

 +9       ;--- Calculate median value if NUM is even

 +10       SET MV=$QSUBSCRIPT(PI,VPOS)

 +11       IF '(NUM#2)

               Begin DoDot:1

 +12               SET PI=$QUERY(@PI)

                   SET I=$SELECT($EXTRACT(PI,1,FLTL)=FLT:$QSUBSCRIPT(PI,VPOS),1:"")

               End DoDot:1

               if I=""

                   QUIT ""

               SET MV=(MV+I)/2

 +13       QUIT MV