Variable (order quantity) | Model(1) | Mode (2) |
Logit regression coefficient |
|
|
Intercept | 3.286** (1.006) | 2.498* (1.266) |
Duration | 0.013*** (0.004) | 0.013*** (0.004) |
Promotion strategies (reward-type promotion) | −0.219 (0.225) | 0.609 (0.813) |
Promotion intensity | ― | 8.680 (8.489) |
Promotion intensity × Reward-type promotion | ― | −9.075 (8.583) |
Distributor’s scale (natural logarithm) | −0.149* (0.059) | −0.149* (0.059) |
Time | control | control |
Region | control | control |
Negative binomial regression coefficient |
|
|
Intercept | 5.822*** (1.000) | 3.607** (1.273) |
Duration | 0.021*** (0.002) | 0.020*** (0.002) |
Promotion strategies (reward-type promotion) | −0.513** (0.170) | 1.849* (0.874) |
Promotion intensity | ― | 20.347* (8.856) |
Promotion intensity × Reward-type promotion | ― | −22.764* (8.961) |
Distributor’s scale (natural logarithm) | −0.116* (0.055) | −0.103† (0.055) |
Time | control | control |
Region | control | control |
Log (Measures of Dispersion) | −0.434*** (0.076) | −0.409*** (0.075) |
Log-likelihood | −3962 | −3956 |
Sample size | 1803 | 1803 |