The Qualisex questionnaire was developed and validated to assess sexuality in patients with rheumatoid arthritis. To the best of our knowledge, there is no instrument to evaluate sexuality in axial spondyloarthritis (axSpA). For this reason, the objective of this study was to validate and adapt the Qualisex questionnaire in axSpA and evaluate the impact of the disease on patients' sexuality. Cross sectional study. Consecutive patients, with ≥ 21 years of age, diagnosed with axSpA according to ASAS'09 criteria were included. Sexual health was assessed using the Qualisex questionnaire. The original version was translated to Spanish and adapted to axSpA. Internal consistency, and test re-test reliability was calculated. Criterion and construct validity were assessed by comparing the Qualisex with parameters of disease activity functional capacity and quality of life. 61 patients were invited to participate in the study, 11 of whom refused. 50 patients were included; 40 (80%) were males, with a median age of 47 years (IQR 21-72) and a median disease duration of 13 years (IQR 1-46). Reproducibility was excellent with an ICC of 0.99 (95% CI 0.65-1). The Qualisex had a good correlation with different disease evaluation parameters. The Qualisex was significantly higher among women (5.4 in women vs. 2.5 in men, p = 0.02), unemployed (4.7 in unemployed vs. 2.3 in employed, p = 0.01), in patients with higher disease activity (4.2 in active patients vs. 1.6 in inactive patients, p = 0.01), and it was lower in patients receiving biologic therapy (BT) (1.9 with BT vs. 3.8 without BT, p = 0.01). Multivariable analysis showed that female sex, longer disease duration and higher disease activity were independently associated with a greater impact on sexuality. The Qualisex adapted to axSpA is a valid and reliable questionnaire. Female axSpA patients, those with longer disease duration and higher disease activity presented a worse sexual life.
Keywords: Ankylosing spondylitis; Axial spondyloarthritis; Psoriatic arthritis; Qualisex; Sexuality.