translate English to French: 18.7) respiratory admissions SO4: 9.0% (p < 0.01) H+: 28% (p < 0.01) O3 had highest mean effect; O3 correlation coefficient r = 0.51 (H+); 0.67 (SO4); H+-SO4 r = 0.77 (can't be distinguished) Anchorage, Alaska 22 months, May 1992 - March 1994 (Gordian et al., 1996) PM2.5 was unusually low fraction of PM10; limited monitoring gave average ratio 0.26, as low as 0.14 outpatient visits to ED or doctors' offices, for respiratory diseases No data reported CO also examined; coarse fraction of PM larger than usual; PM significant, but high PM during eruption not significant for asthma, respiratory infections (CP not as important as fine fraction PM10) Eastern Washington State 3 towns, October 1990, all of 1991 (Hefflin et al., 1994) Area subject to blowing dust, thus PM2.5 fraction of PM10 was smaller than average ED visits for respiratory diseases (various) No data reported Although the odds ratio for ED visits was raised slightly in dust storms, this was less than expected on the basis of high PM10 levels; concluded that crustal dust not significant Abbreviations:
Admissions pour une maladie respiratoire. SO4: 9,0% (p < 0,01) H+: 28% (p < 0,01) O3 avait l'effet moyen le plus élevé; coefficient de corrélation de O3: r = 0,51 (H+); 0,67 (SO4); H+-SO4 r = 0,77 (ne peut être distingué). Anchorage, Alaska 22 mois, mai 1992 à mars 1994 (Gordian et al., 1996) Les P2,5 ne représentaient exceptionnellement qu'une faible partie des P10; une surveillance limitée a donné un ratio moyen de 0,26, aussi faible que 0,14, Visites de malades externes à l'urgence ou au bureau du médecin pour une maladie respiratoire.