The impact of purchase behaviours on cigarette price (general estimating equation (GEE) models)
| Variables | Coefficient | SE | Coefficient | SE | Coefficient | SE |
|---|---|---|---|---|---|---|
| Do not control for cigarette brands: | ||||||
| The most-used cigarette brand chosen because of its low cost: 1: yes; 0: no | −0.181*** | 0.0145 | −0.180*** | 0.0144 | ||
| Most recent cigarette purchase for self was in carton: 1: yes; 0: no | −0.103*** | 0.0133 | −0.101*** | 0.0132 | ||
| Observations | 13 771 | 13 947 | 13 768 | |||
| Number of IDs | 7218 | 7250 | 7217 | |||
| Average real price per pack | ¥6.75 | ¥6.75 | ¥6.75 | |||
| Estimated percentage reduction in real price per pack | −17% | −10% | −17% | |||
| −10% | ||||||
| Estimated amount reduction in real price per pack | ¥1.15 | ¥0.68 | ¥1.15 | |||
| ¥0.67 | ||||||
| Do control for cigarette brands: | ||||||
| The most-used cigarette brand chosen because of its low cost: 1: yes; 0: no | −0.166*** | 0.0144 | −0.165*** | 0.0143 | ||
| Most recent cigarette purchase for self was in carton: 1: yes; 0: no | −0.0891*** | 0.0132 | −0.0869*** | 0.0131 | ||
| Observations | 13 235 | 13 404 | 13 232 | |||
| Number of IDs | 7139 | 7176 | 7138 | |||
| Average real price per pack | ¥6.75 | ¥6.75 | ¥6.75 | |||
| Estimated percentage reduction in real price per pack | −15% | −8% | −15% | |||
| −8% | ||||||
| Estimated amount reduction in real price per pack | ¥1.01 | ¥0.54 | ¥1.02 | |||
| ¥0.54 | ||||||
SEs have been adjusted to take into account the correlations in the error terms among the same respondent. Interview waves/years, and cities were included in all regressions.
*p<0.05, **p<0.01, ***p<0.001.