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H. Wakelee

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    O24 - Cancer Control and Epidemiology III (ID 134)

    • Event: WCLC 2013
    • Type: Oral Abstract Session
    • Track: Prevention & Epidemiology
    • Presentations: 1
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      O24.03 - Lung cancer incidence trends among Asian-American ethnic populations in the United States, 1990-2010 (ID 1969)

      16:15 - 17:45  |  Author(s): H. Wakelee

      • Abstract
      • Presentation
      • Slides

      In the United States (US), anti-smoking policies have resulted in a population-wide decline in lung cancer rates over the past decade. However, little is known about how lung cancer incidence trends vary among Asian-American ethnic populations, the largest growing population in the US.

      For the first time, annual population estimates for Asian-American ethnic populations were developed for the regions in the Surveillance, Epidemiology, and End Results program, comprising half of the total U.S. Asian-American population. From 1990-2010, incidence rates and average annual percentage change (APC) were computed for each racial/ethnic group for lung cancer overall and by gender and histology.

      Among Asian-American males, trends were either stable or declining in all groups (Figure 1). The declines were statistically significant among Koreans (APC = -3.0), Hawaiians (APC = -2.3), Vietnamese (APC = -1.4), Filipino (APC = -1.9 from 1996-2010), and Chinese (APC = -1.5). Among Asian-American females, declining trends were seen among Hawaiians (APC = -5.9 from 2002-2010) and Vietnamese (APC = -1.5). In contrast, increasing trends were seen among Japanese (APC = 1.7) and Filipinas (APC = 1.5). Among Asian-American males, all histologies exhibited stable or declining trends with the exception adenocarcinoma, which increased among Chinese males from 1997-2010, appearing independent of the decrease in NOS, which occurred much later in this group. Among Asian-American females, declining or stable trends were seen for most histologies, with the exception of adenocarcinoma among Filipina and Korean females (APC = 2.5 and 3.0, respectively), and squamous cell carcinoma among Japanese females (APC = 2.4). Figure 1

      To the extent that Asian-Americans have distinct primary and second-hand smoking profiles, unique environmental exposures , and population-specific genetic predisposition, analysis of incidence trends by histology suggests that, among Asian-American females, additional risk factors beyond primary and perhaps secondary smoking may be important for lung cancer etiology. The continued increase of lung cancer incidence among Filipina, Korean, and Japanese American females, especially in adenocarcinomas and squamous cell carcinomas, warrants further attention.

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