Objective: To determine the prevalence of obstructive sleep apnea (OSA), as confirmed byrespiratory polygraphy, and to analyze its association with sociodemographic, anthropometric, lifestyle, and comorbidity-related variables among patients attending outpatient pulmonary consultations. Materials and methods: An observational, analytical, and retrospective study was conducted based on the medical records of adult patients evaluated for suspected OSA at the Pulmonology Department of Hospital de Especialidades No. 2, a tertiary care center of the Instituto Mexicano del Seguro Social (IMSS – Mexican Social Security Institute) in Ciudad Obregón, Sonora, between January 2023 and December 2024. Patients who had undergone respiratory polygraphy and had recorded variables such as age, sex, weight, height, body mass index (BMI), neck and abdominal circumference, physical activity, smoking hist...