The self-management instrument for breast cancer patients undergoing adjuvant therapy: Development and psychometric testing using the COSMIN methodology.

ABSTRACT:

Objective

This study aims to develop and test the self-management instrument for breast cancer patients undergoing adjuvant therapy (SMAT-B).

Methods

After a qualitative interview with 29 patients and two rounds of Delphi expert consultation with 15 experts, 49 items were initially generated. Before item reduction, another structured interview was conducted for content validity. Item analysis and exploratory factor analysis (n ​= ​377) were used for item reduction. After that, internal consistency, split-half reliability, test-retest reliability (n ​= ​30), measurement error, construct validity, and structural validity (n ​= ​342) were preliminarily evaluated using the COnsesus-based Standards for the selection of health Measurements INstruments guidelin

SUBMITTER: Jia L 

PROVIDER: S-EPMC10471928 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature