Translation and validation into Brazilian Portuguese of the Post-Catheterization Questionnaire, or Cooper Scale, for post-puncture quality of life analysis in diagnostic arteriography of the lower limbs

Background: The Cooper Scale is an English-language questionnaire specifically designed to analyze quality of life after arterial puncture for procedures such as arteriography and angioplasty. The CS also specifically asks about the patient's preference for radial or femoral artery access. Objectives: To translate the Cooper Scale into Brazilian Portuguese and validate it. Methods: The translation process was conducted in accordance with international linguistic validation guidelines with a sample of 62 patients with peripheral arterial occlusive disease who underwent diagnostic arteriography at a quaternary hospital in São Paulo, Brazil. Reliability was assessed with tests of reproducibility (test-retest with a 24-hour interval) and internal consistency. Construct validity was analyzed in terms of the correlation between the items on the Cooper Scale and those of the EUROQOL 5D-5L, which was also administered to the 62 patients in the sample. Results: The translated Cooper Scale had moderate internal consistency and high reliability in the test-retest analysis, with intraclass correlation coefficients ranging from 0.563 to 0.834 (p < 0.001). Significant correlations were observed between the items on the Cooper Scale and those on the EQ-5D-5L. Conclusions: The Cooper Scale was translated into Brazilian Portuguese and then validated, demonstrating adequate psychometrics and reliability for administration to patients who have undergone arterial punctures.