Piff and his colleagues acknowledge the limitations of the study.
While the authors of the paper acknowledged some of the limitations of their study, they devoted only one sentence to the limitations of BMI.
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Other limitations of the Swedish study reviewed here include the fact that it was based on an observational cohort and that we cannot obviously know the other lifestyle factors of the cohort which may have contributed to stone formation.
The authors note the limitations of their study here in the full text of the article, which included that it relied on maternal recall of vitamin intake around pregnancy, several years after the pregnancy.
Leszczynski argued that the limitations of this study amounted to failure of the peer review system and called for the retraction of the paper and an investigation into why it was published in the first place.
One of the key limitations in the study is that the researchers only accounted for baseline dietary and health data.
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The study had important limitations, including the small number of patients and the lack of a control group that was followed with standard therapy to compare benefits and side effects.
The authors recognize several limitations of their study, noting that it was limited to salacious facts that people might be more likely to lie about.
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However, as noted by the authors themselves and the author of an editorial commenting on the article, the study has several limitations.
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But the study has limitations, because it is an after-the-fact analysis of data.
Despite some limitations of trial design, including the open label nature of the study, RECORD remains the only randomized trial of cardiovascular outcomes for Avandia at this time.
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Among other limitations of the studies: Patients whose claims were analyzed in the MD Anderson study weren't randomized to either treatment, nor did researchers know why patients had mastectomies.
Scott's study had limitations, but there is a long history of Acinetobacter infections in the Middle East.
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