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G. Goyal



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    ORAL 04 - Adjuvant Therapy for Early Stage Lung Cancer (ID 99)

    • Event: WCLC 2015
    • Type: Oral Session
    • Track: Treatment of Localized Disease - NSCLC
    • Presentations: 1
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      ORAL04.06 - Impact of Demographic and Health System Factors on Adjuvant Chemotherapy Use in Stage II Non-Small Cell Lung Carcinoma: A National Cancer Database Analysis from 2000 to 2012 (ID 3056)

      10:45 - 12:15  |  Author(s): G. Goyal

      • Abstract
      • Presentation
      • Slides

      Background:
      Non-small cell carcinoma is the most common type of lung cancer. A few recent prospective trials have shown that the addition of adjuvant chemotherapy after operable stage II non-small cell carcinoma patients is associated with an improved survival[1,2]. Adjuvant chemotherapy is effective but underutilized. Our aim was to analyze the practice patterns for adjuvant chemotherapy use in stage II non-small cell lung carcinoma using the National Cancer Database (NCDB).

      Methods:
      We selected a historical cohort of patients diagnosed with stage II non-small cell carcinoma between 2000 and 2012. This cohort is selected from the National Cancer Database (NCDB). NCDB is a national oncology outcomes database that includes 70% of new cancer diagnoses from more than 1,500 Commission on Cancer accredited programs in the United States and Puerto Rico. We studied this cohort to find out the difference in patterns of adjuvant chemotherapy use among stage II non-small cell carcinoma patients based on demographic and insurance characteristics. Two-tailed chi-square test was used as the test of significance with a p-value < 0.05 being considered significant. All values are given in percentages.

      Results:
      The total number of patients diagnosed with stage II lung cancer between the years 2000 to 2012 was analyzed (n=112430). We observed an increase in the percentage of patients receiving adjuvant chemotherapy from 9% to 18% from the year 2003 to 2004. The factors associated with increased adjuvant chemotherapy use were private insurance, ages 30 to 69, White/Hispanic race, higher education, higher income groups and female gender (p<0.0001)(Table 1). Table 1. Adjuvant Chemotherapy use in stage II Non-Small cell lung cancer.

      VARIABLES INCLUDED PERCENTAGE OF PATIENTS RECEIVING ADJUVANT CHEMOTHERAPY
      Diagnosis year
      2000-2003 6
      2003-2012 23
      Age
      <30 7
      30-49 22
      50-69 25
      69-89 9
      Insurance status
      Private/managed 26
      Medicaid 19
      Medicare 15
      Uninsured 17
      Sex
      Male 17
      Female 19
      Annual Household Income (USD: 2012 census)
      <36000 15
      36000-43999 17
      44000-52999 18
      53000-68999 19
      >69000 21
      Educational Status (% Patients without HS degree)
      >23% 15
      15-22.9% 17
      11- 14.9% 18
      6-10.9% 19
      <6% 21
      Race
      White 18
      Black 17
      Hispanic 19
      Charlson comorbidity score
      None 21
      One 23
      >= 2 18


      Conclusion:
      This cohort illustrates the increase in adjuvant chemotherapy use from 2000 to 2012 with significant increase during the year of 2004. Access to adjuvant chemotherapy is dependent on various demographic factors. The treatment and outcomes of non-small cell carcinoma is dependent on the type of treatment used, which itself is affected by the population demographics and health system factors. These variables should be studied in detail to find out the cause for the underutilization of adjuvant chemotherapy despite the evidence of survival benefit in patients with stage II non-small cell carcinoma of lung.

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