Fig. 6

Subgroup analyses by number of men and women in the smoking group compared to the non-smoking group. Group 1 has a mean age ≥ 40. Group 2 has a mean age < 40.

Subgroup analyses by number of men and women in the smoking group compared to the non-smoking group. Group 1 has a mean age ≥ 40. Group 2 has a mean age < 40.