Gender differences in colon cancer treatment

Area of Science:

• Oncology
• Public Health
• Health Services Research

Background:

• Colon cancer disproportionately affects women, yet gender differences in treatment are understudied.
• Evidence-based treatment disparities are particularly concerning in states with higher mortality rates, such as Alabama.

Purpose of the Study:

• To investigate gender-based differences in colon cancer treatment among older patients in Alabama.

Main Methods:

• Analysis of Alabama Statewide Cancer Registry data (2000-2002) for patients aged 65+.
• Medicare claims data used to identify surgical and 5-fluorouracil (5FU) chemotherapy treatment.
• Generalized Estimating Equation (GEE) models employed to assess gender disparities, controlling for clinical and socioeconomic factors.

Main Results:

• Women were more likely to receive surgery (95.5% vs. 92.2%) but less likely to receive 5FU chemotherapy (38.6% vs. 45.2%) compared to men.
• Women were also more likely to receive shorter durations of 5FU (0-4 months).
• Gender differences in chemotherapy receipt were statistically significant (aOR 0.78, p=0.049).

Conclusions:

• Significant gender disparities exist in colon cancer treatment in Alabama.
• Women received less chemotherapy, warranting further investigation into the underlying causes and clinical implications.