New ventilation systems at select schools in Sweden--effects on asthma and exposure.

@article{Smedje2000NewVS,
  title={New ventilation systems at select schools in Sweden--effects on asthma and exposure.},
  author={Greta Smedje and Dan Norb{\"a}ck},
  journal={Archives of environmental health},
  year={2000},
  volume={55 1},
  pages={18-25}
}
The air-exchange rate is often low in schools. The authors studied the possible impact of improving school ventilation on health and exposure of pupils. Questionnaire data on allergies, asthma, and asthmatic symptoms were obtained in 1993 and 1995 for 1,476 primary- and secondary-school pupils in 39 randomly selected schools. Various exposure factors were measured in 1993 and 1995 in approximately 100 classrooms. In 12% of the classrooms, new ventilation systems were installed between 1993 and… CONTINUE READING

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