Rank Order Function Farrokh Alemi Ph D HEALTH

Rank Cross Join HEALTH INFORMATICS PROGRAM Order Data Based on a Column Values Repeated

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Rank Skips Rank Dense Does Not

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Rank Skips: 1, 1, 3, 4

Cross Join HEALTH INFORMATICS PROGRAM ID 10 10 icd 9 I 276. 1 I

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Advice: If it makes sense, delete

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Advice: Patient having same diagnosis at

Rank Function Syntax Cross Join RANK ( ) OVER ( [ <partition_by_clause> ] <order_by_clause>

Rank Function Syntax Cross Join , Rank() OVER (partition by id, icd 9 order

Rank Function Syntax DROP TABLE #Temp Cross Join Use Database called Age. Dx USE

Rank Function Syntax DROP TABLE #Temp Cross Join USE Age. Dx SELECT ID, icd

se Rank Function Syntax au l c y DROP TABLE #Temp nb o i

Rank Function Syntax Cross Join HEALTH INFORMATICS PROGRAM ID 10 10 10 icd 9

RANK ORDER FUNCTION IS USEFUL IN ANALYSIS OF DATA IN ELECTRONIC HEALTH RECORDS

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Rank Order Function Farrokh Alemi, Ph. D. HEALTH INFORMATICS PROGRAM HI. GMU. EDU

Rank Cross Join HEALTH INFORMATICS PROGRAM Order Data Based on a Column Values Repeated Same Dx for Same Patient GEORGE MASON UNIVERSITY

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Rank Skips Rank Dense Does Not GEORGE MASON UNIVERSITY

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Rank Skips: 1, 1, 3, 4 Rank Dense Does Not GEORGE MASON UNIVERSITY

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Rank Skips: 1, 1, 3, 4 Rank Dense Does Not: 1, 1, 2, 3 GEORGE MASON UNIVERSITY

Cross Join HEALTH INFORMATICS PROGRAM ID 10 10 icd 9 I 276. 1 I 276. 1 Age 63. 16 64. 08 64. 25 64. 33 64. 66 64. 75 Rank 1 2 3 3 Skip 4 5 6 7 GEORGE MASON UNIVERSITY

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Advice: If it makes sense, delete repeated entries Rank Skips: 1, 1, 3, 4 Rank Dense Does Not: 1, 1, 2, 3 GEORGE MASON UNIVERSITY

Rank & Rank_Dense Cross Join HEALTH INFORMATICS PROGRAM Advice: Patient having same diagnosis at same time Rank Skips: 3, 3, 5, 6 Rank Dense Does Not: 3, 3, 4, 5 GEORGE MASON UNIVERSITY

Rank Function Syntax Cross Join RANK ( ) OVER ( [ <partition_by_clause> ] <order_by_clause> ) HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax Cross Join , Rank() OVER (partition by id, icd 9 order by icd 9, ageatdx) HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax DROP TABLE #Temp Cross Join Use Database called Age. Dx USE Age. Dx SELECT ID, icd 9, Age. At. Dx , Rank() OVER (partition by id, icd 9 order by icd 9, Age. At. Dx) AS [Repeated Dx] INTO #Temp Use table called Final FROM dbo. final WHERE ID=10 GROUP BY ID, icd 9, Age. At. Dx Select * FROM #Temp ORDER BY ID, icd 9, [Repeated Dx] HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax DROP TABLE #Temp Cross Join USE Age. Dx SELECT ID, icd 9, Age. At. Dx , Rank() OVER (partition by id, icd 9 order by icd 9, Age. At. Dx) AS [Repeated Dx] INTO #Temp FROM dbo. final For ease we are working with WHERE ID=10 person with ID 10 GROUP BY ID, icd 9, Age. At. Dx Select * FROM #Temp ORDER BY ID, icd 9, [Repeated Dx] HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax DROP TABLE #Temp Cross Join USE Age. Dx SELECT ID, icd 9, Age. At. Dx , Rank() OVER (partition by id, icd 9 order by icd 9, Age. At. Dx) AS [Repeated Dx] INTO #Temp FROM dbo. final WHERE ID=10 Duplicates are removed so rank GROUP BY ID, icd 9, Age. At. Dx and rank dense are same Select * FROM #Temp ORDER BY ID, icd 9, [Repeated Dx] HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax DROP TABLE #Temp Cross Join USE Age. Dx SELECT ID, icd 9, Age. At. Dx , Rank() OVER (partition by id, icd 9 order by icd 9, Age. At. Dx) AS [Repeated Dx] INTO #Temp FROM dbo. final Or WHERE ID=10 de rb y. C GROUP BY ID, icd 9, Age. At. Dx lau se Select * FROM #Temp ORDER BY ID, icd 9, [Repeated Dx] HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

se Rank Function Syntax au l c y DROP TABLE #Temp nb o i t Cross Join rti a P USE Age. Dx SELECT ID, icd 9, Age. At. Dx , Rank() OVER (partition by id, icd 9 order by icd 9, Age. At. Dx) AS [Repeated Dx] INTO #Temp FROM dbo. final WHERE ID=10 GROUP BY ID, icd 9, Age. At. Dx Select * FROM #Temp ORDER BY ID, icd 9, [Repeated Dx] HEALTH INFORMATICS PROGRAM GEORGE MASON UNIVERSITY

Rank Function Syntax Cross Join HEALTH INFORMATICS PROGRAM ID 10 10 10 icd 9 I 041. 89 I 112. 0 I 253. 6 I 263. 9 I 272. 4 I 275. 2 Age. At. Dx Repeated Dx 64. 666666 1 64. 25 1 64. 75 2 65. 25 3 64. 916666 1 64. 25 1 65. 25 2 64. 916666 1 65. 583333 2 GEORGE MASON UNIVERSITY

RANK ORDER FUNCTION IS USEFUL IN ANALYSIS OF DATA IN ELECTRONIC HEALTH RECORDS