[Application of gender perspective in papers published between 2000 and 2003 from four National Institutes of Health journals].

Objective: The objective of this study was to determine the application of gender perspective in public health papers in four journals published by the Mexican National Health Institutes.

Material And Methods: A total of 999 papers published in the four journals between 2000 and 2003 was reviewed. Two levels of analysis were considered: (a) data presented by sex, providing description of differences between women and men, and (b) the analysis of these differences from gender perspective.

Surveillance of acute health effects of air pollution in Mexico City.

Background: A unique, active, timely, low-cost surveillance system for the metropolitan area of Mexico City was established in the mid-1990s.

Methods: The system obtained upper and lower respiratory tract symptoms and eye symptoms from daily interviews for a systematic sample of the general nonhospitalized population living within a 2-km radius of air pollution monitors during 1996-1997.

Results: Ozone increments (10 ppb) were associated with upper respiratory symptoms (odds ratio [OR] = 1.