“…A more reasonable assumption is that women are more likely to report respiratory complaints since symptom verbalization is more socially acceptable (6,21), whereas for men, it is socially less acceptable to go into a great depth when explaining their physical complaints (7,21). Other possible explanations for gender differences include environmental influences, work settings, and immunological factors (5,7,13,(33)(34)(35)(36)(37)39). How country of origin or childhood exposure to smoking influences BHR across ethnic groups requires further studies.…”