[Opportunity cost for men who visit family medicine units in the city of Querétaro, Mexico].

Objective: To determine the opportunity cost for men who seek care in the family medicine units (FMU) of the Mexican Social Security Institute (IMSS, Instituto Mexicano del Seguro Social) in the city of Querétaro.

Methods: A sample was selected of 807 men, ages 20 to 59 years, who sought care through the family medicine, laboratory, and pharmacy services provided by the FMU at the IMSS in Querétaro. Patients referred for emergency services and those who left the facilities without receiving care were excluded.