Reliability and validity testing for manager post competency evaluation scale in central sterile supply department based on iceberg model

OBJECTIVE To analyze the manager post competency evaluation scale in central sterile supply department based on the iceberg model and test its reliability and validity.

METHODS A pool of items was constructed based on literature research and semi-structured interviews. The scale was further refined through expert meetings and a pilot survey. A convenience sampling method was used to select 362 managers from central sterile supply departments in medical institutions at various levels in Hunan Province in Jan. 2024 as survey subjects. Questionnaires were administered, and the reliability and validity of the scale were tested.

RESULTS The final version of the scale encompassed five dimensions: personal traits, management abilities, professional abilities, other abilities, professional knowledge and skills, with a total of 39 items. The item-level validity coefficients of the scale ranged from 0.83 to 1.00, and the content validity index was 0.93. Exploratory factor analysis revealed a Bartlett′s test value of 4 723.828 (P < 0.001), a KMO test coefficient of 0.937 and a cumulative variance explanation rate of 74.34% for the five common factors. Confirmatory factor analysis results indicated that the root mean square error of approximation (RSEMA) was < 0.08, the root mean square residual (RMR) was < 0.05, and both the incremental fit index (IFI) and comparative fit index (CFI) were >0.9. The Cronbach′s α coefficient of the scale was 0.977, the split-half reliability was 0.955, and the test-retest reliability was 0.952.

CONCLUSIONS The manager post competency evaluation scale in central sterile supply departments developed in this study demonstrates relatively good reliability and validity. It can effectively evaluate manager post competency and provide references for improving related evaluation systems and optimizing training programs.