オランダにおける死亡率と交通関連大気汚染の指標との関連:コホート研究
Gerard Hoek1, Bert Brunekreef, Sandra Goldbohm
1Institute for Risk Assessment Sciences, Environmental and Occupational Health group, Utrecht University, Utrecht, Netherlands. g.hoek@iras.uu.nl
Lancet (London, England)
|October 29, 2002
まとめ
黒い煙や二酸化窒素などの交通関連の大気汚染に長期間曝露すると,特に心肺疾患による死亡のリスクが増加する可能性があります. この研究は,主要道路の近くの空気の質が健康に及ぼす影響を強調しています.
科学分野:
- 環境衛生 環境衛生 環境衛生
- エピデミオロジー エピデミオロジー
- 公衆衛生は公衆衛生である.
背景:
- 粒子状物質による大気汚染への長期的曝露は,米国における心肺疾患による死亡率の増加と関連しています.
- ダイエットとがんに関するオランダコホート研究 (NLCS) は,環境の健康への影響を調査するための貴重なデータセットを提供します.
研究 の 目的:
- オランダのコホート研究における交通関連の大気汚染と死亡率の関連性を評価する.
- 特定の大気汚染物質 (黒煙,二酸化窒素) と特定原因による死亡率との関係を調べる.
主な方法:
- NLCS研究 (1986-1994) の5000人の参加者 (55~69歳) のランダムサンプルを分析した.
- 交通関連の大気汚染物質への曝露は,1986年の住所を基に推定され,背景濃度と主要道路の近くを考慮した.
- コックスの比例リスクモデルを使用して,大気汚染の曝露と死亡率の関連性を評価し,混同要因を調整した.
主要な成果:
- 心肺疾患による死亡率は,主要道路の近くに住んでいることと有意な関連性を示した (RR 1.95).
- 推定された環境背景濃度との関連性も観察されましたが,一貫性はありませんでした (RR 1.34).
- 主要道路の近くに住んでいると,死亡率の相対リスクは1.41であったが,非心肺がん,非肺がんによる死亡率は有意ではなかった.
結論:
- 交通関連の大気汚染への長期的曝露は,寿命を短くする重要な要因である可能性があります.
- この調査結果は,特に都市環境や道路付近で,空気の質が公衆衛生に及ぼす影響を強調しています.
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