Table 3.
The association between product features and the prices of electronic cigarette devices stratified by device type from 5 popular, US-based, web-based vape shops from April to August 2022 (n=1045).
| Products and features | Coefficient | P value | ||||
| Mod kits (n=427) | ||||||
|
|
Number of tanks or pods | 0.008 | .84 | |||
|
|
Tank or pod volume size | 0.038 | .07 | |||
|
|
Battery capacity: <900 mAh as a comparison group | |||||
|
|
|
900 mAh≤capacity<1500 mAh | 0.117 | .27 | ||
|
|
|
Capacity≥1500 mAh | 0.139 | .06 | ||
|
|
|
Battery not included | 0.215a,b | .03 | ||
|
|
Maximum output wattage: <40 W as a comparison group | |||||
|
|
|
40 W≤output<85 W | 0.049 | .35 | ||
|
|
|
Output≥85 W | 0.273a,b | .02 | ||
|
|
|
Wattage output missing | –0.098 | .55 | ||
| Mod device–only products (n=229) | ||||||
|
|
Battery capacity: <900 mAh as a comparison group | |||||
|
|
|
900 mAh≤capacity<1500 mAh | 0.503a,b | .03 | ||
|
|
|
Capacity≥1500 mAh | 1.034a,b | .04 | ||
|
|
|
Battery not included | 0.844a,b | .04 | ||
|
|
Maximum output wattage: <40 W as a comparison group | |||||
|
|
|
40 W≤output<85 W | 0.455b,c | .01 | ||
|
|
|
Output≥85 W | 0.693b,c | .003 | ||
|
|
|
Wattage output missing | 0.532 | .07 | ||
| Pod kits (n=348) | ||||||
|
|
|
Number of tanks or pods | 0.100a,b | .04 | ||
|
|
|
Tank or pod volume size | 0.011 | .60 | ||
|
|
Battery capacity: <900 mAh as a comparison group | |||||
|
|
|
900 mAh≤capacity<1500 mAh | 0.160b,d | <.001 | ||
|
|
|
Capacity≥1500 mAh | 0.239b,c | .008 | ||
|
|
|
Battery missinge | 0.506b,c | .002 | ||
|
|
Maximum output wattage: <40 W as a comparison group | |||||
|
|
|
40 W≤output<85 W | 0.125a,b | .05 | ||
|
|
|
Output≥85 We | –0.023 | .67 | ||
|
|
|
Wattage output missing | 0.046 | .12 | ||
| Vape pens (n=41) | ||||||
|
|
Vape pen volume size | 0.037b,d | .001 | |||
|
|
Battery capacity: <900 mAh as a comparison group | |||||
|
|
|
900 mAh≤capacity<1500 mAh | 0.093 | .14 | ||
|
|
|
Capacity≥1500 mAh | 0.119b,c | .008 | ||
|
|
|
Battery missing | 0.765b,d | .001 | ||
|
|
Maximum output wattage: <40 W as a comparison group | |||||
|
|
|
40 W≤output<85 W | –0.001 | .99 | ||
|
|
|
Output≥85 Wf | –0.244b,c | .008 | ||
|
|
|
Wattage output missing | –0.193 | .06 | ||
aP<.05.
bAll regressions were controlled for accessories.
cP<.01.
dP<.001.
eSince only 2 pod kits have output wattage greater than 85 W and only 3 pod kits have missing battery capacity information, their estimated coefficients have limited statistical relevance.
fSince only 1 vape pen has an output wattage greater than 85 W, the estimated coefficient has limited statistical relevance.