The Importance Of Study Design

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The data employed by the study has been gathered by the California Nursing Outcomes Coalition project (CalNOC), “a growing national focus on patient safety that galvanized the media, clinicians, consumers, and policymakers to conclude that the health care system was exposing patients to iatrogenic risks, errors, omissions and complications resulting in unnecessary suffering and complications, prolonged recovery, extraordinary costs and 44,000 to 98,000 unnecessary deaths nationally per year.” (CITATION?) Donaldson and colleagues “did not find a significant change despite a preponderance of research linking nurse staffing with these measures.” What was the study design/method? What were the results of the study? (It’s unclear what led them …show more content…
A significant limitation is several of the studies is the weakness of cross-sectional study design to establish causality and although it is able to show correlation, it is crucial to explore the many reasons that may result in the correlation. For example, in the Lake et al. (2010) study, increase in LPN/NA hours was correlated with increase in fall rates. It would be erroneous to conclude that increase LPN/NA hours caused the increase in fall rates, as the study design is unable to support causality. In this case, it is possible that the numbers are merely showing that in the nursing units were patient fall rates were higher, more staff were put on and lower salary workers such as LPNs and NAs were staffed as opposed to RNs. Another example of study design limitation is in the Cho et al. (2016) study that asked nurses to report how often patients fell. Although the number of patient falls in that study are significantly higher than other studies, the validity of the measure is questionable as related to the inconducive nature of employee survey reporting being unbiased and accurate. Furthermore, although 60 hospitals were selected in the study, the control variables of the bed size, funding, and structural and organizational system of the hospitals were unavailable for

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