Telomere length and oxidative stress in small cell lung cancer patients: changes through chemotherapy cycles compared to healthy controls.

Similarly, the Kaplan-Meier analysis for PON1 showed a borderline significant difference in survival (Log-rank test: χ 2 = 3.834, p = 0.050), indicating a possible trend towards poorer survival outcomes in patients with lower PON1 activity.

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In contrast, the oxidative stress and tumor characteristics factor and the gender-related clinical biomarker factor did not reach statistical significance, as their confidence intervals included 1, meaning they were not significant predictors of response or extensive stage.

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