Burnett R T, Dales R, Krewski D, Vincent R, Dann T, Brook J R
Health Protection Branch, Health Canada, Tunney's Pasture, Ottawa, Ontario.
Am J Epidemiol. 1995 Jul 1;142(1):15-22. doi: 10.1093/oxfordjournals.aje.a117540.
The association of daily cardiac and respiratory admissions to 168 acute care hospitals in Ontario, Canada, with daily levels of particulate sulfates was examined over the 6-year period 1983-1988. Sulfate levels were recorded at nine monitoring stations in regions of southern and central Ontario spanned by three monitoring networks. A 13-micrograms/m3 increase in sulfates recorded on the day prior to admission (the 95th percentile) was associated with a 3.7% (p < 0.0001) increase in respiratory admissions and a 2.8% (p < 0.0001) increase in cardiac admissions. Increases were observed for all age groups examined. Admissions for cardiac diseases increased 2.5% for those under 65 years and 3.5% for those 65 years and older. After adjusting for ambient temperature and ozone, similar increases in respiratory admissions were observed in the period from April to September (3.2%) and in the period from October to March (2.8%). A 3.2% increase was observed for cardiac admissions in the period from April to September, and a 3.4% increase was observed in the period from October to March after adjusting for ambient temperature and ozone.
在1983年至1988年的6年期间，研究了加拿大安大略省168家急症护理医院每日心脏和呼吸系统疾病入院情况与每日硫酸盐颗粒物水平之间的关联。硫酸盐水平在安大略省南部和中部地区的9个监测站记录，这些监测站由三个监测网络覆盖。入院前一天记录的硫酸盐水平每增加13微克/立方米（第95百分位数），呼吸系统疾病入院人数增加3.7%（p<0.0001），心脏疾病入院人数增加2.8%（p<0.0001）。在所研究的所有年龄组中均观察到增加。65岁以下人群的心脏病入院人数增加2.5%，65岁及以上人群增加3.5%。在调整环境温度和臭氧后，4月至9月期间呼吸系统疾病入院人数有类似增加（3.2%），10月至3月期间也有类似增加（2.8%）。调整环境温度和臭氧后，4月至9月期间心脏疾病入院人数增加3.2%，10月至3月期间增加3.4%。
