Cigarette Design Features in Low-, Middle-, and High-Income Countries

Table 3

Design features associated with ISO tar yields across all brands (a) and stratified by country income group (b).

(a) Overall

Final adjusted 𝑅-square value	Model	Standardized coefficients	Sig.
0.852	Vent	−0.722	<0.001
	Per-cig weight	0.475	<0.001
	Tipping	−0.344	<0.001
	Filter diameter	0.233	0.004
	Tobacco length	−0.244	0.017
	Paper porosity	−0.150	0.070

(b) Stratified by income group

	Final adjusted 𝑅-square value	Model	Standardized coefficients	Sig.
Low	0.561	Vent	−0.037	0.909
		Tobacco length	−0.857	0.047
Middle	0.894	Vent	0.055	0.795
		Tipping	−2.139	<0.001
		Filter length	2.212	<0.001
		Number of rows	−0.547	0.014
		Per-cigarette weight	0.620	0.015
		Cigarette length	−0.391	0.072
High	0.956	Vent	−0.897	<0.001
		Tipping	−0.308	0.015
		Number of rows	0.266	0.009
		Per-cigarette weight	0.522	<0.001
		Cigarette length	−0.204	0.055
		Filter diameter	0.282	0.004