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Countif values meets date criteria

  1. 04-28-2009, 04:41 PM #1
    kayacsp17
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    Countif values meets date criteria

    I would like to count the number of appointments in a row that occur following a first appointment based on how soon after they occur (within 90 days, between 91-180 days, 181-270 days, and 271-365 days).

    Column A is client number
    Column B is initial appointment date
    Column C, etc. are dates of subsequent appointments

    A B C D E F
    1 11/2/98 12/3/98 3/4/99 9/5/99 10/25/99
    2
    3

    So for the sample above the counts for each category would be 1 appointment occurred within 90 days after 11/2/98, 1 occurred between 91-180 days after 11/2/98, and 2 occurred 271-365 days after 11/2/98.

    I have attached a sample of what I'm trying to do. Suggestions?
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  2. 04-28-2009, 05:51 PM #2
    JBeaucaire
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    Re: Countif values meets date criteria

    A normal COUNTIF() formula seems to give me the results you want. You just have to remove matches made in earlier columns.

    H2:
    =COUNTIF($C2:$F2,"<="&$B2+90)

    I2:
    =COUNTIF($C2:$F2,"<="&$B2+180)-SUM($H2:H2)

    J2:
    =COUNTIF($C2:$F2,"<="&$B2+270)-SUM($H2:I2)

    K2:
    =COUNTIF($C2:$F2,"<="&$B2+365)-SUM($H2:J2)
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