Table 2

The effects of product attributes on price discounts

Product attributesDependable variable: price discounts (cents off/mL of e-liquid)
Full sample
(Observed: 13 324)		Salt nicotine
(Observed: 3270)		Freebase nicotine
(Observed: 6942)		Nicotine free
(Observed: 3112)
Nicotine concentration0.007
(0.017)		−0.006
(0.006)		0.011
(0.014)		–
Nicotine form
 Nicotine freeReference group
 Freebase0.004
(0.083)
 Salt15.030***
(1.131)
VGPG ratio
 70/30Reference group
 50/50−4.267***
(0.768)		−2.947**
(1.445)		−0.013
(0.544)		−0.123
(0.568)
 75/25−0.426
(0.942)		6.673
(3.837)		0.498
(0.473)		0.575
(0.510)
 80/20−0.143
(0.748)		1.811
(2.833)		−0.524
(0.558)		−0.475
(0.585)
 Other0.329
(0.667)		−2.529
(1.593)		0.834
(0.711)		0.850
(0.727)
 Missing1.356***
(0.457)		0.566
(1.515)		0.212
(0.326)		0.242
(0.334)
Flavour
 Tobacco/unflavouredReference group
 Fruit, no other flavours−1.071
(0.805)		1.060
(2.499)		−1.287
(0.668)		−1.684**
(0.831)
 Sweets, not menthol or fruit−1.359
(0.832)		−0.198
(2.837)		−1.379**
(0.618)		−1.788**
(0.800)
 Any menthol−1.168
(0.781)		0.427
(2.592)		−0.911
(0.601)		−1.259
(0.778)
 Nut/spice/alcohol/beverage, not menthol−0.965
(0.856)		1.487
(2.719)		−1.021
(0.655)		−1.342
(0.831)

  • Nicotine form: products that were identified as nicotine salt by using keyword matching and with a nicotine concentration > 11 mg/ml were coded as “Salt”.

  • ***P<0.01, **0.01<P<0.05

  • VGPG, vegetable glycerine/propylene glycol.