Indoor environment in relation to recurrent childhood pneumonia in Southern China

摘要

Childhood pneumonia is a leading cause of childhood death. Studies on the associations between indoor environmental exposure and pneumonia, especially recurrent pneumonia, in South China are limited. Identification of associated factors can facilitate the implementation of effective, scientific measures to prevent recurrent pneumonia. We aimed to identify long-term impact factors in the home environment that influence paediatric respiratory health. A cross-sectional study was conducted for 2673 children (age 3-9 years) from 22 kindergarten and 10 primary schools in Foshan of China. We used a multivariate logistic regression model to analyse the relationship between indoor environment and recurrent pneumonia in children by odds ratio (OR) and 95% confidence interval (CI). The incidence of childhood pneumonia was 23.8% in Foshan; the average age at initial pneumonia diagnosis was 2.23 +/- 1.55 years. New furniture was significantly associated with an increased incidence of childhood pneumonia (>= 4 episodes; OR 2.525 [95% CI: 1.029-6.193]). A small house (41-75 m(2)), stone or tile (wall-painting material), wood cooking fuels, and floor moisture in the current or earlier residence significantly increased pneumonia risk (2-3 episodes). Dampness was a significant risk factor for childhood recurrent pneumonia. Improved ventilation is beneficial for children's respiratory health. Our study indicates the important factors of home environment exposures contribute to the occurrence of childhood pneumonia. Control of indoor humidity and pollution may reduce the frequency of childhood pneumonia.