Table 6.

The contribution of smoking duration on income-related inequalities by wave

	Wave 1			Wave 2
Variable	Elasticity	Contribution	%	Elasticity	Contribution	%
Self-reported health	0.002	0.014	0.614	0.001	0.009	0.353
Health Index	0.013	0.114	5.126	0.019	0.193	7.659
	Wave 3			Wave 4
Variable	Elasticity	Contribution	%	Elasticity	Contribution	%
Self-reported health	0.004	0.038	1.720	0.004	0.003	1.779
Health Index	0.035	0.315	14.104	0.037	0.025	14.674

Notes: Results presented in this table are elasticities, contributions, and percentage contributions of smoking duration to income-related health inequality. The results are obtained by decomposing the income-related health inequality indices into health related covariates, including smoking duration. Self-reported healthis binary while the health index is continuous with high values representing poor health outcomes. Smoking duration is continuous ranging from zero. Other covariates include household per capita income, gender, categories for age, province of residence, race, marital status, and education