. 2014 Apr 24;23(Suppl 3):iii41–iii47. doi: 10.1136/tobaccocontrol-2013-051515

Table 3.

Analysis of disposable and reusable e-cigarettes broken down by FDM and convenience stores

Variables	FDM store: market fixed-effects models					Convenience store: market fixed-effects models
Variables	(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
Disposable e-cigarettes
Ln price E-cig disposable	−1.103*	−1.242**	−1.247**	−1.252**	−0.518	−1.303	−1.374	1.027	−1.617	−3.819**
	(0.555)	(0.495)	(0.496)	(0.524)	(0.755)	(1.227)	(1.259)	(1.167)	(1.233)	(1.598)
SFA index		−3.679***	−3.824***	−3.385***	3.092		2.254	3.602	1.635	3.160
		(0.657)	(0.821)	(0.688)	(2.311)		(5.685)	(5.570)	(5.585)	(8.286)
Ln tax cigarette			2.149					−3.498**
			(4.315)					(1.548)
Ln price cigarette				−5.373	−8.320*				6.648	6.130
				(6.040)	(4.177)				(5.376)	(5.969)
Ln price e-cig reusable					0.478**					0.599
					(0.230)					(0.480)
Observations	304	304	304	304	211	265	265	265	265	248
R²	0.363	0.391	0.395	0.396	0.425	0.695	0.696	0.703	0.700	0.709
Reusable e-cigarettes
Ln Price e-cig reusable	−0.394	−0.347	−0.344	−0.322	−0.421	−3.300***	−3.350***	−3.315***	−3.361***	−3.330***
	(0.298)	(0.303)	(0.304)	(0.307)	(0.313)	(0.613)	(0.618)	(0.624)	(0.601)	(0.596)
SFA index		2.073	2.121	2.218	2.960		4.320	5.137	3.892	5.708
		(2.251)	(2.251)	(2.378)	(2.524)		(7.108)	(7.072)	(7.140)	(7.130)
Ln tax cigarette			1.923**					−2.338**
			(0.723)					(0.961)
Ln price cigarette				−2.660	−2.930				4.401	1.736
				(4.470)	(4.525)				(5.466)	(3.484)
Ln price e-cig disposable					0.697					−1.193
					(0.733)					(1.287)
Observations	214	214	214	214	211	260	260	260	260	248
R²	0.545	0.546	0.548	0.547	0.549	0.609	0.614	0.620	0.617	0.617

Year, quarter and market-level dummies are not shown in the table. SEs are clustered at the market level. ***p<0.01, **p<0.05, *p<0.1.

FDM, food, drug and mass.