Turkish validation of the chronic orchialgia symptom index and its association with the visual analog scale

To conduct a translation and validation study of the Chronic Orchialgia Symptom Index (COSI), which has 12 questions in three domains pain (P), sexual symptoms (SS), and quality of life (QoL), in the Turkish language.

The study included a total of 175 patients diagnosed with chronic scrotal content pain (CSCP) between January 2023 and January 2024. In addition to demographic data, the scores obtained on the COSI questionnaire and Visual Analog Scale (VAS) were recorded. Internal consistency was assessed using Cronbach alpha coefficients. Reliability was evaluated using the test-retest correlation method.

The mean age of the patients was 37.2 ± 14.1 years and the median (IQR) duration of pain was 5.5 (9) months. The median total COSI score was determined as 13 (13) and the median subscores were 7 (7) for P, 1 (2) for SS, and 5 (6) for QoL. The test-retest correlation coefficient for each item was determined to be higher than r = 0.80 (p < 0.001). The Cronbach alpha values for the subscores were 0.80 for P, 0.71 for SS, and 0.80 for QoL. There was determined to be a statistically significant positive correlation between the VAS score and the COSI P, SS, QoL, and total scores (r: 0.63, p < 0.001; r = 0.32, p < 0.001; r = 0.56, p < 0.001; r = 0.59, p < 0.001, respectively). The optimal cutoff point of the COSI total score was determined to be 16.5 points (AUC:0.77, p < 0.001) for the determination of patients experiencing severe pain (⩾ 7.5) according to the VAS score.

The Turkish version of the COSI questionnaire is a valid, reliable, and repeatable questionnaire that can be used to evaluate the effects of symptom severity in patients with CSCP.