Table 3.
Demand parameters alpha and Q0 for each frequency group by task type. Reported values are average group values (±SEM). Values for cigarettes alone and cigarettes + e-cigarettes available are derived from individual demand curve fits. Values for e-cigarettes alone are derived from group curve fits.
| Alpha (±SEM) | Q0(±SEM) | |
|---|---|---|
|
| ||
| Cigs Alone | ||
|
| ||
| Daily | 0.048 (0.0093) ^ | 25.44 (1.76) |
|
|
||
| Weekly | 0.039 (0.0074) | 29.51 (3.30) |
|
| ||
| Monthly | 0.070 (0.022)^ | 26.17 (2.36) |
|
|
||
| Less than once in 6 months | 0.066 (0.028) | 26.19 (2.44) |
|
| ||
| Never users | 0.033 (0.0060)*# | 27.47 (1.67) |
|
| ||
|
| ||
| E-cigs Alone | ||
|
|
||
| Daily | 0.0063 (0.00048)#$ | 9.61 (0.33)&^ |
|
| ||
| Weekly | 0.0063 (0.00058)#$ | 12.53 (0.48)*#$ |
|
|
||
| Monthly | 0.0091 (0.00081)*&$^ | 8.08 (0.31)&^ |
|
| ||
| Less than once in 6 months | 0.013 (0.00097)*&#^ | 8.23 (0.23)&^ |
|
|
||
| Never users | 0.0056 (0.00064)#$ | 13.94 (0.66)*#$ |
|
| ||
| Cigs + e-cigs Available | ||
|
|
||
| Daily | 0.084 (0.016)^ | 21.07 (2.16) |
|
| ||
| Weekly | 0.052 (0.012)^ | 23.47 (1.84) |
|
|
||
| Monthly | 0.041 (0.011) | 23.96 (2.46) |
|
| ||
| Less than once in 6 months | 0.048 (0.017) | 21.16 (1.60) |
|
|
||
| Never users | 0.024 (0.005)*& | 22.18 (2.20) |
|
|
||
*
p<0.05 difference from Daily group.
&
p<0.05 difference from Weekly group.
#
p<0.05 difference from Monthly group.
$
p<0.05 difference from Less than once in 6 months group.
^
p<0.05 difference from the Never users group.