Table 1. Characteristics.

	Paediatricians (n = 43)	Youth Health Care Physicians (n = 60)	Family Physicians (n = 138)
Sex
Female*	61% (26)	87% (52)	35% (48)
Years in practice
Less than 3 years*	21% (9)	9% (5)	3% (4)
3 to 10 years	33% (14)	25% (15)	25% (35)
More than 11 years*	47% (20)	67% (40)	72% (99)
Smoking
Current	5% (2)	3% (2)	6% (8)
Ex-smoker*	14% (6)	25% (15)	38% (52)
Unknown	2% (1)	0% (0)	4% (6)
PS exposure as child
Yes	40% (17)	57% (34)	50% (69)
Unknown	2% (1)	0% (0)	4% (6)
PS exposure Education
Yes*	21% (9)	57% (34)	9% (12)
Unknown	2% (1)	0 (0%)	4% (6)

Missing values: N = 4 did not provide their specialty. Other missing values are presented as unknown in the table. PS  =  passive smoke.

* = p<0.05.