https://pubmed.ncbi.nlm.nih.gov/32380572/ This criterion is linked to a Learning Outcome4. Study Variables: a. In 1 sentence, provide the independent and dependent variables. b. In 1-2 sentences, describe how the independent variables were operationalized. In other words, how the independent concepts/variables were described. For example, if the study’s independent variable was an intervention, describe in 1-2 sentences the intervention. If the independent variable was teaching, then in 1-2 sentences describe the content of the teaching. If the authors do not provide a description, please indicate this. c. In 1-2 sentences, describe how the dependent variables were operationalized. In other words, how the dependent variables were measured in the study. What instruments or tools were used to measure the dependent variables in the study? d. In 1-2 sentences, state if the instruments or tools used to measure the dependent variables were: a) Valid-Did they measure what the researchers said they measured? b) Reliable-Did they measure a concept the same way every time they were used? If the authors do not provide this information, please indicate this.