バイタルサイン:乳癌重症度における人種格差－アメリカ、2005～2009年

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ホーム IMICライブラリ MMWR抄訳 2012年（Vol.61)バイタルサイン:乳癌重症度における人種格差－アメリ･･･

MMWR抄訳

2012/11/16Vol. 61 / No. 45

MMWR61(45):922-926
Vital Signs: Racial Disparities in Breast Cancer Severity － United States, 2005-2009

バイタルサイン:乳癌重症度における人種格差－アメリカ、2005～2009年

National Program of Cancer Registries(NPCR)およびSurveillance, Epidemiology, and End Results(SEER)プログラムより2005～2009年に診断された新規浸潤性乳癌の症例データを分析した。分析対象は年平均205,246例、白人女性:173,970例、黒人女性:21,942例であり、10万人あたりの発症率は白人女性:122.1、黒人女性:116.9であった。ステージ別では局限型(原発部位のみ)、領域型(原発部位から拡散または所属リンパ節転移)、遠隔型(多臓器への転移)発症率がそれぞれ白人女性:75.7、36.8、6.0%、黒人女性:61.0、42.3、9.6%と領域型および遠隔型が黒人女性にて高値を示した。さらに乳癌による死亡率も白人女性:22.4に対し黒人女性:31.6と41%高値であった。死亡率対発症率比(MIR)はアメリカ全体にて白人女性:0.18、黒人女性:0.27であり、デラウエア州およびロードアイランド州では黒人女性と白人女性がほぼ同値、他の州およびDCでは黒人女性にて高値であった。以上、黒人女性では白人女性に比べ乳癌の発症率は低いが乳癌の進行度および死亡率が高く、乳癌スクリーニング、追跡および診断後の治療に白人女性との不平等性が認められた。

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