Turkish validity and reliability study of the quality of care through the patient's eyes^chemo scale: Methodological study

Objectives: This study aimed to assess the Turkish validity and reliability of the Quality of Care Through the Patient's Eyes^chemo Scale. Methods: Conducted at a university hospital in Türkiye, the study utilized a methodological design and involved 335 chemotherapy patients in the Outpatient Unit. Data collection employed a simple random sampling method along with a "Patient Information Form" and the "Quality of Care Through the Patient's Eyes^chemo Scale." Steps were taken to determine the language, content, construct validity, and reliability of the scale. Results: Patients had a mean age of 54.48 years, with the majority being female (53.1%) and married (75.8%). Breast cancer (22.1%), lung cancer (17.3%), and colon cancer (10.7%) were the most common diagnoses among patients. Content validity analysis resulted in the removal of 9 items from the 67-item scale, with a content validity index of 0.92. The suitability of the data for factor analysis was confirmed with a Kaiser-Meyer-Olkin (KMO) value of 0.936 and Bartlett's test (6042.307, p<0.000). However, in construct validity, Confirmatory Factor Analysis (CFA) fit indices, including χ²/SS (3.963), GFI (0.674), IFI (0.690), CFI (0.788), and RMSEA (0.124), fell below acceptable limits, suggesting incompatibility of the original structure of the scale in the country. Exploratory Factor Analysis (EFA) revealed a 3-factor structure with 27 items, explaining 59.648% of the total variance. The scale demonstrated a Spearman-Brown correlation coefficient of 0.871, a Guttman equivalent halves coefficient of 0.867, and a total Cronbach's alpha value of 0.950. Conclusion: The scale is a valid and reliable tool for measuring the information and communication needs of chemotherapy patients. It is expected to serve as a guide for chemotherapy nurses in effectively assessing these needs.