Give one example of a data collection method used in one of the studies identified in your Week 5 project. What variable was this method used to measure? Peer Reply: Week 5: Measurement Strategies Give one example of a data collection method used in one of the studies identified in your Week 5 project. What variable was this method used to measure? Data was collected retrospectively from two academic hospitals and two community hospitals in Massachusetts. Data was limited to mechanical ventilation episodes that started between March 1 and August 31 in each year from 2017 to 2020. Data was extracted through the electronic health record systems by using the Center for Disease Control’s (CDC) ventilator associated event (VAE) criteria. The following information was also collected along with the start and stop dates of mechanical ventilation: age, sex, date of admission, date of VAE, and mortality during hospitalization. Patients who received extracorporeal membrane oxygenation were excluded from the data as this does not beet the definition of the CDC’s VAE criteria. Comorbidities were extracted from diagnoses in the electronic medical records using the Elixhauser method. The Elixhauser Comorbidity Index is a method of categorizing comorbidities (Links to an external site.) of patients based on the International Classification of Diseases (ICD) (Links to an external site.) diagnosis codes found in administrative data, such as hospital abstracts data. Each comorbidity category is dichotomous -- it is either present or it is not. The Index can be used to predict hospital resource use and in-hospital mortality (Elixhauser et al., 1998) (Links to an external site.) (Tsai et. al., 2020). This method was used to compare 1) VAE rates in pandemic years vs. pre-pandemic years, and 2) VAE causes in COVID-19 positive vs. COVID-19 negative patients (Weinberger et. al., 2022).  

When the hypothesis relates to finding the difference in the outcome variable between two groups, an independent samples t-test is used.  When there are more than two groups, a One-Way ANOVA is performed with post-hoc tests.  In this module, assumptions for both tests are considered.  Upon successful completion of this module, you will be able to: Develop research questions and testable hypotheses linked to existing theory or research. Demonstrate that they can develop hypotheses, choose appropriate statistics to test them, and describe the results correctly in a short research paper. Develop research questions and testable hypotheses linked to existing theory or research. Perform descriptive and inferential statistical analysis of public administrative datasets using IBM SPSS software.Interpret results from descriptive and inferential statistical analysis of public administrative datasets and place results in APA formatted text, tables, and figures.