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sum items in a column based on criteria located in other columns
I'm using Excel to maintain records for participants in a multisite clinical
trial of therapy groups. I'd like to use a function that filters records according to specific criteria so that I get a count of the records meeting these criteria. I have a column in which I have recorded the research site (Site A=1, Site B=2). Another column records the experimental condition to which participants have been assigned (Control=0, Treatment=1). Therapy group has been recorded in another column (Group 1=1, Group 2=2, etc.). Here's and example of what the data looks like: ID Site Condition Group 1 1 1 1 2 1 1 1 3 1 0 1 4 1 1 1 5 2 0 1 6 2 0 1 7 2 1 1 8 2 0 1 A table I could create to provide a breakdown of the number of participants at each site in each group in each therapy group would look something like this: Site A Group 1 Treatment 3 Control 1 Site B Group 1 Treatment 1 Control 3 Certainly, a "COUNTIF" function could be used to provide a total number of cells having the value of "0" and the total number of cells having the value "1", but I'd like to be able to create a complex function based on multiple criteria so I can produce a table like that depicted above. Thanks in advance for any assistace provided. Kurt |
#2
Posted to microsoft.public.excel.misc
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sum items in a column based on criteria located in other columns
Use SUMPRODUCT of the form:
=SUMPRODUCT(--(A1:A1000=Site),--(B1:B1000=Group),--(C1:C1000=Condition)) Site,Group,Condition can be cells holding required values SUMPRODUCT cannot use whole columns i.e. A:A is not allowed and all arrays must be same size. HTH "Kurt" wrote: I'm using Excel to maintain records for participants in a multisite clinical trial of therapy groups. I'd like to use a function that filters records according to specific criteria so that I get a count of the records meeting these criteria. I have a column in which I have recorded the research site (Site A=1, Site B=2). Another column records the experimental condition to which participants have been assigned (Control=0, Treatment=1). Therapy group has been recorded in another column (Group 1=1, Group 2=2, etc.). Here's and example of what the data looks like: ID Site Condition Group 1 1 1 1 2 1 1 1 3 1 0 1 4 1 1 1 5 2 0 1 6 2 0 1 7 2 1 1 8 2 0 1 A table I could create to provide a breakdown of the number of participants at each site in each group in each therapy group would look something like this: Site A Group 1 Treatment 3 Control 1 Site B Group 1 Treatment 1 Control 3 Certainly, a "COUNTIF" function could be used to provide a total number of cells having the value of "0" and the total number of cells having the value "1", but I'd like to be able to create a complex function based on multiple criteria so I can produce a table like that depicted above. Thanks in advance for any assistace provided. Kurt |
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