| 内容提要: |
Indoor pollutions could become serious threat for the
occupant’s health with insufficient ventilation. The present study is a nested
case-control investigation involving 410 children. As part of the inspection,
the concentration of carbon dioxide in homes was continuously measured over 24
hours. The air change rates during nights when the children were sleeping were
calculated by using CO2 produced by occupants as the tracer gas. The
questionnaires were used to survey health outcomes of children. Adjusted odds
ratio (AORs) of a low ventilation rate (below the median value of 1.34
L/s/person) for case was 4.19 (95% Confident Interval (CI): 1.07- 22.60). This
study suggests that at low air change rate may lead to a higher prevalence rate
of asthma and allergy among children. |