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Editor's note: This is the 19th article in a series on clinical research by nurses. The series is designed to be used as a resource for nurses to understand the concepts and principles essential to research. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the 18th article in a series on clinical research by nurses. The series is designed to be used as a resource for nurses to understand the concepts and principles essential to research. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the 16th article in a series on clinical research by nurses. The series is designed to be used as a resource for nurses to understand the concepts and principles essential to research. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the 12th article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the 10th article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. The articles will be accompanied by a podcast offering more insight and context from the authors. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Abstract: Editor's note: This is the ninth article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. The articles will be accompanied by a podcast offering more insight and context from the authors. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the eighth article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. The articles will be accompanied by a podcast offering more insight and context from the authors. To see all the articles in the series, go to https://links.lww.com/AJN/A204., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the fourth article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. The articles will be accompanied by a podcast offering more insight and context from the authors. To see all the articles in the series, go to http://links.lww.com/AJN/A204., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

Editor's note: This is the third article in a series on clinical research by nurses. The series is designed to give nurses the knowledge and skills they need to participate in research, step by step. Each column will present the concepts that underpin evidence-based practice-from research design to data interpretation. The articles will be accompanied by a podcast offering more insight and context from the author., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

The article focuses on the Measurement in Nursing Research. Topics discussed include quantitative research examines associations between research variables as measured through numerical analysis, where study effects (outcomes) are analyzed using statistical technique; and Qualitative research explores research questions through an analysis of nonnumerical data sources and reports outcomes as themes or concepts that describe a phenomenon or experience.

The article focuses on how nurses need to know about types of probability and nonprobability sampling. Topics include the researchers attempt to align the study sample with the target population on as many characteristics as possible, and the methodology influences how well the study represents the target population, and thereby affects the generalizability of the study.