Table 2 Age 11: ever smoking (odds) by parental social class and personal income (quartiles) (adjusted for sex and age (months)) (n = 2370).

	Model 1	Model 2	Model 3
Social class	***		**
I	1.00		1.00
II	2.97*		2.74*
IIIn	3.06*		2.62
IIIm	4.50**		3.65**
IV	4.67**		3.73**
V	6.32***		5.21**
Income		***	***
Quartile 1		1.00	1.00
Quartile 2		1.69**	1.62*
Quartile 3		2.05**	1.86**
Quartile 4		3.32***	2.95***

*p<0.05 **p<0.01 ***p<0.001.