A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level
Abstract Background The Quenouille-Addelman solution has been proposed to properly analyze linear models with a crossed or factorial arrangement of treatments that includes a qualitative/categorical and a quantitative factor with a zero level, a situation particularly prevalent in ecotoxicological s...
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| Format: | Article |
| Language: | English |
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CABI
2022-09-01
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| Series: | CABI Agriculture and Bioscience |
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| Online Access: | https://doi.org/10.1186/s43170-022-00128-0 |
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| author | Gaétan Moreau |
| author_facet | Gaétan Moreau |
| author_sort | Gaétan Moreau |
| collection | DOAJ |
| description | Abstract Background The Quenouille-Addelman solution has been proposed to properly analyze linear models with a crossed or factorial arrangement of treatments that includes a qualitative/categorical and a quantitative factor with a zero level, a situation particularly prevalent in ecotoxicological studies. However, a review of the recent literature reveals that this solution isn’t used, perhaps due to a lack of recognition that zero-level factors can produce incomplete factorial arrangements. Results Using practical examples, I demonstrate that the conclusions of a study can be substantially altered if the Quenouille-Addelman solution is not used when warranted. Conclusions Suspecting that the lack of a detailed method may have contributed to the underutilization of the solution, I describe how to apply the solution using current statistical software packages and discuss how the solution can be adapted to address some experimental situations not previously considered. |
| format | Article |
| id | doaj-art-691691ea94b143d48072f0b8ffcdce76 |
| institution | Kabale University |
| issn | 2662-4044 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | CABI |
| record_format | Article |
| series | CABI Agriculture and Bioscience |
| spelling | doaj-art-691691ea94b143d48072f0b8ffcdce762025-02-02T03:57:41ZengCABICABI Agriculture and Bioscience2662-40442022-09-01311610.1186/s43170-022-00128-0A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero levelGaétan Moreau0Université de MonctonAbstract Background The Quenouille-Addelman solution has been proposed to properly analyze linear models with a crossed or factorial arrangement of treatments that includes a qualitative/categorical and a quantitative factor with a zero level, a situation particularly prevalent in ecotoxicological studies. However, a review of the recent literature reveals that this solution isn’t used, perhaps due to a lack of recognition that zero-level factors can produce incomplete factorial arrangements. Results Using practical examples, I demonstrate that the conclusions of a study can be substantially altered if the Quenouille-Addelman solution is not used when warranted. Conclusions Suspecting that the lack of a detailed method may have contributed to the underutilization of the solution, I describe how to apply the solution using current statistical software packages and discuss how the solution can be adapted to address some experimental situations not previously considered.https://doi.org/10.1186/s43170-022-00128-0Factorial arrangementIncomplete factorial arrangementQualitative factorZero level |
| spellingShingle | Gaétan Moreau A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level CABI Agriculture and Bioscience Factorial arrangement Incomplete factorial arrangement Qualitative factor Zero level |
| title | A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level |
| title_full | A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level |
| title_fullStr | A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level |
| title_full_unstemmed | A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level |
| title_short | A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level |
| title_sort | recurring error in evaluating the effects of different pesticides pollutants and fertilizers with a zero level |
| topic | Factorial arrangement Incomplete factorial arrangement Qualitative factor Zero level |
| url | https://doi.org/10.1186/s43170-022-00128-0 |
| work_keys_str_mv | AT gaetanmoreau arecurringerrorinevaluatingtheeffectsofdifferentpesticidespollutantsandfertilizerswithazerolevel AT gaetanmoreau recurringerrorinevaluatingtheeffectsofdifferentpesticidespollutantsandfertilizerswithazerolevel |