Statistics And Appraisal Of Evidence

Statistics and Appraisal of Evidence Name Institution Course Code and Title Professor Date Statistics and Appraisal of Evidence High-specification foam mattresses (HFMs) and alternating pressure mattresses (APMs) help prevent pressure ulcers. This paper discusses p-values and generalizability in research. P-value (p) is a level that determines if there is a significant difference between a sample estimate and a hypothesized value (Shreffler & Huecker, 2023). The value reflects the likelihood that the observed effects (study's findings) would have happened by chance if there is no verifiable effect in reality. Research data with p <0.05 is statistically significant. As a result, researchers reject the null hypothesis. However, if p>0.05, researchers accept the null hypothesis since there is no statistically significant difference. The null hypothesis in the quantitative study by Nickson et al. (2019) reflected a lack of statistical difference between participants using HFMs and APMs in preventing pressure ulcer development. The researchers measured the time difference between the study groups to develop pressure injuries category ≥ 2 in a maximum of 90 days. Only 160 out of 2029 patients developed pressure ulcers. The findings reflected a p-value of 0.0890 in the time difference between the participants to develop pressure ulcers category ≥ 2. Th...