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

Table 4

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

(a) Overall

Final adjusted 𝑅-square value	Model	Standardized coefficients	Sig.
0.774	Vent	−0.568	<0.001
	Tipping	−0.752	<0.001
	Filter weight	0.937	<0.001
	Filter length	−0.447	0.059

(b) Stratified by income group

	Final adjusted 𝑅-square value	Model	Standardized coefficients	Sig.
Low	0.860	Vent	−0.191	0.385
		Per-cigarette weight	1.372	0.013
		Filter weight	−0.627	0.078
Middle	0.915	Vent	−0.430	<0.001
		Per-cigarette weight	0.200	0.033
		Tipping	−2.310	<0.001
		Filter length	2.063	<0.001
High	0.710	Vent	−0.637	<0.001
		Per-cigarette weight	0.537	0.003
		Tobacco length	−0.333	0.046