Variable
|
Coefficient
|
Standard error
|
Nicotine gums and patches sales | −0.0041-150
| 0.002 |
Cigarette price | −0.2601-150
| 0.114 |
Time trend | −0.0021-150
| 0.001 |
First quarter | 0.015 | 0.031 |
Second quarter | 0.0601-160
| 0.016 |
Third quarter | 0.008 | 0.031 |
Dummy 1992 | −0.076 | 0.030 |
Dummy 1996 | −0.040 | 0.033 |
Constant | 7.9671-160
| 0.520 |