Values are frequency (%). SHS, Secondhand smoke exposure. * n, the
number of children with each characteristic; N, the total number of
children with information available on this characteristic. **Fisher’s
exact. †χ2 test for proportions, Student’s t-test for mean. |
Values are frequency (%). SHS, Secondhand smoke exposure. * n, the
number of children with each characteristic; N, the total number of
children with information available on this characteristic. **Fisher’s
exact. †χ2 test for proportions, Student’s t-test for mean. |
Values are frequency (%). SHS, Secondhand smoke exposure. * n, the
number of children with each characteristic; N, the total number of
children with information available on this characteristic. **Fisher’s
exact. †χ2 test for proportions, Student’s t-test for
mean. |