Event-Related Rumination Inventory: A Validation Process in the Greek Language

Area of Science:

• Psychology
• Oncology
• Psychometrics

Background:

• Rumination is a recognized negative psychological response in women diagnosed with breast cancer.
• Accurate measurement of rumination is crucial for effective psychological support and intervention.
• Existing instruments may not be culturally adapted or validated for specific populations, such as Greek women with breast cancer.

Purpose of the Study:

• To validate the Event-Related Rumination Inventory (ERRI) in a sample of Greek women diagnosed with breast cancer.
• To assess the psychometric properties, including reliability and validity, of the Greek version of the ERRI.
• To explore the relationship between rumination and other psychological and clinical variables in this population.

Main Methods:

• Translation and back-translation of the Event-Related Rumination Inventory (ERRI) into Greek.
• Principal component analysis was used to determine the factor structure of the Greek ERRI.
• Assessment of internal consistency, criterion validity (correlations with post-traumatic growth, distress, depression, anxiety), and associations with sociodemographic and medical characteristics.

Main Results:

• Principal component analysis yielded a two-factor solution: intrusive thoughts and positive outcome.
• All subscales demonstrated satisfactory internal consistency and variance.
• The Greek ERRI scores showed significant correlations with measures of post-traumatic growth, distress, depression, and anxiety, supporting criterion validity.

Conclusions:

• The Greek version of the Event-Related Rumination Inventory (ERRI) is a valid and reliable instrument for measuring rumination in women with breast cancer.
• The validated ERRI can be utilized to assess rumination and inform psychological interventions for Greek breast cancer patients.
• Further research can explore the clinical utility of the ERRI in understanding the nuances of rumination in this patient group.