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Research ArticleOriginal Article

LEEP in the Family Practice Setting

David J. Lyman and Brent Morris
The Journal of the American Board of Family Practice May 2003, 16 (3) 204-208; DOI: https://doi.org/10.3122/jabfm.16.3.204
David J. Lyman
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Brent Morris
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Article Figures & Data

Tables

    • View popup
    Table 1.

    Recurrence of Dysplasia Relative to Margin Result.

    Margin ResultNo Recurrence % (No.)Mild Recurrence % (No.)Severe Recurrence % (No.)
    Positive margin75.0 (18/24)025.0 (6/24)
    Negative margin84.8 (39/46)15.2 (7/46)0
    • View popup
    Table 2.

    Contingency Table for No Recurrences.

    MarginsYes NumberNo NumberTotal Number
    Negative39 (37.46)*7 (8.54)46
    Positive18 (19.54)6 (4.46)24
    Total571370
    • * Numbers in parentheses are calculated.

    • Note: The observed χ2 = 0.99. If there were an effect at the P = .25 level, then the expected χ2 = 1.32; and at the P = .05 level, the expected χ2 = 3.841. Because the observed does not exceed the expected, the type of margin does not affect the frequency of no recurrence (P > .25). Accept the null hypothesis that the frequencies are the same.

    • View popup
    Table 3.

    Contingency Table for Mild Recurrences.

    MarginsYes NumberNo NumberTotal Number
    Negative7 (4.6)*39 (41.4)46
    Positive0 (2.4)24 (21.6)24
    Total76370
    • * Numbers in parentheses are calculated.

    • Note: The observed χ2 = 4.06. If there were an effect at the P = .05 level, then the expected χ2 = 3.84. Because the observed exceeds the expected, we conclude that the margin type affects the frequency of mild recurrence (P = .05). Reject the null hypothesis that the frequencies are the same.

    • View popup
    Table 4.

    Contingency Table for Severe Recurrences.

    MarginsYes NumberNo NumberTotal Number
    Negative0 (3.94)*46 (41.4)46
    Positive6 (2.06)18 (21.94)24
    Total66470
    • * Numbers in parentheses are calculated.

    • Note: The observed χ2 = 12.38. If there were an effect at the P = .005 level, then the expected χ2 = 7.88. Because the observed exceeds the expected, we conclude the margin type affects the frequency of severe recurrence (P = .005). Reject the null hypothesis that the frequencies are the same

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The Journal of the American Board of Family Practice: 16 (3)
The Journal of the American Board of Family Practice
Vol. 16, Issue 3
1 May 2003
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LEEP in the Family Practice Setting
David J. Lyman, Brent Morris
The Journal of the American Board of Family Practice May 2003, 16 (3) 204-208; DOI: 10.3122/jabfm.16.3.204

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LEEP in the Family Practice Setting
David J. Lyman, Brent Morris
The Journal of the American Board of Family Practice May 2003, 16 (3) 204-208; DOI: 10.3122/jabfm.16.3.204
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