Objective: This study focuses on evaluating the relationship between physical findings, particularly collar size and Body Mass Index (BMI), and polysomnographic parameters in male patients seen at a Sleep Disorders Laboratory, suspected to have Obstructive Sleep Apnea (OSA).Methods: Design: Cross-sectional study Setting: Academic tertiary private hospital Subjects: Charts of 149 adult male patients referred for polysomnography between July 1, 2005 and June 30, 2006 were reviewed. Height, weight and external neck circumference measurements were obtained. The data from polysomnography results were noted and correlated with the physical measurements.Results: The mean collar size for the OSA group was 42.03 cm with a mean BMI of 29.14 while the mean collar size for the normal group was 39.05 cm with a mean BMI of 25.36. A significant difference was noted in both the collar size and body mass index (BMI) between the OSA group and the normal group (p
Human ; Male ; Adult ; X