Methodological issues with Sampling Strategy
نویسنده
چکیده
We would like to draw your attention to the following three methodological issues. The first issue is about the use of the word “prospective” by the authors in the title of the study. The title of an article provides a glimpse of not only the topic discussed but also about the methodology used to achieve the result. Accordingly, readers might either choose to stop by, or forego reading the article. Using the word “prospective” in the title gave an impression as if the study has enrolled certain patients from ICU with skin manifestation, and have followed them over a period of time for an outcome analysis. However, what the study has actually done was approached a patient, identified the dermatological manifestation, if any, which became the outcome variable. Moreover, at the same point of time, assessed probable risk factors, such as multimorbidity, duration spent in ICU, in addition to sociodemographic variables, from the hospital information system for that particular patient. This procedure was repeated on consecutively recruited patients between January 1, 2012, and December 31, 2014. None of the patient was actually followed-up which is a prerequisite of “prospective study.” Thus, it appears that by using the term “prospective” the authors perhaps desired to reflect that the recruited patients consecutively as they were admitted to the ICU. The title of the study thus should have used something like,... “done using a cross-sectional study”... while, in the methods sections, sampling strategy should have described the “consecutiveness” of study participant recruitment.
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