Fig. 4
From: Effects of smoking cessation on biological monitoring markers in urine
Changes in urinary m7Gua (a) and 8-OHdG (b) levels by smoking cessation in the subjects with increased NNAL levels at some point in the smoking cessation program. Horizontal bars indicate median values. Group 5: The subjects with increased NNAL levels at 2 weeks (n = 5). Group 6: The subjects who participated in the quit-smoking program for up to 8 weeks and had increased NNAL levels at some point (n = 6, Friedman’s test followed by Dunn’s multiple comparisons test). There are no significant differences from baseline