Assessment of the fear of progression in Turkish cancer patients: a validation and reliability study fear of progression questionnaire short form.

BACKGROUND

This study sought to translate and validate the Fear of Progression Questionnaire-Short Form (FoP-Q-SF) for use in assessing the FoP among Turkish cancer patients.

METHODS

A sample of 185 cancer patients who were undergoing active treatment at Ege University Oncology Clinic participated in this study. The FoP-Q-SF was translated into Turkish and its psychometric properties were assessed. The questionnaire's reliability was evaluated using Cronbach's alpha and McDonald's omega, while its validity was tested via confirmatory factor analysis (CFA) and correlation with established measures such as the Hospital Anxiety and Depression Scale (HADS) and European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core-30 (EORTC QLQ-C30).

RESULTS

The FoP-Q-SF demonstrated high internal consistency (Cronbach's alpha = 0.89, McDonald's omega = 0.89) and a strong unidimensional structure based on CFA (CFI = 0.987, TLI = 0.984, RMSEA = 0.078, SRMR = 0.076). Significant correlations were found between the FoP-Q-SF scores and related anxiety measures, including the HADS-D, HADS-A and EORTC QLQ-C30 emotional and total scores (0.395-0.578, p < 0.01). The known-groups validity analysis revealed that the FoP-Q-SF scores were higher among female cancer patients (p < 0.001), which was consistent with the findings of previous studies, while no significant associations were observed with cancer patients' age, marital status, perceived income, educational status or psychiatric history.

CONCLUSIONS

The FoP-Q-SF is a valid and reliable tool for assessing the FoP among Turkish cancer patients, which renders it suitable for clinical and research applications in this population.