Comparison of expression levels of citrullinated histones according to age and smoking.
Results are represented as mean ± standard deviation. Analyzed using Welch’s ANOVA followed by Games-Howell test.
Group 1: age ≥ 40, non-smoker; group 2: age < 40, non-smoker; group 3: age ≥ 40, smoker.
*: statistically significant difference (P < 0.05).
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