TABLE 3.
Estimates of the demand by therapeutic drug classes.
| Dependent variable: log(Q) | ||||||
|---|---|---|---|---|---|---|
| Specification (1) | Specification (2) | |||||
| Anti-tumor | CVD | Antimicrobial | Anti-tumor | CVD | Antimicrobial | |
| L1.logQ | 0.356*** | 0.0896*** | 0.213*** | 0.337*** | 0.0667** | 0.175*** |
| (0.0471) | (0.0275) | (0.0156) | (0.0447) | (0.0272) | (0.0154) | |
| L2.logQ | 0.108** | −0.00190 | 0.0355*** | 0.114** | −0.0186 | 0.0240*** |
| (0.0469) | (0.0258) | (0.00875) | (0.0451) | (0.0253) | (0.00828) | |
| L3.logQ | 0.192*** | 0.00953 | 0.0298*** | 0.190*** | 0.00727 | 0.0251*** |
| (0.0544) | (0.0252) | (0.00841) | (0.0524) | (0.0244) | (0.00780) | |
| L4.logQ | 0.0104 | 0.0805*** | 0.0514*** | 0.0166 | 0.0733*** | 0.0493*** |
| (0.0526) | (0.0261) | (0.00814) | (0.0505) | (0.0254) | (0.00752) | |
| Log(P) | −0.192** | −1.100*** | −0.695*** | 0.541 | −0.713*** | −2.062*** |
| (0.0865) | (0.149) | (0.0314) | (0.561) | (0.207) | (0.216) | |
| Log(P)*Generic | — | — | — | −0.716 | −0.630*** | 1.385*** |
| — | — | — | (0.535) | (0.242) | (0.218) | |
| 0.0668 | 0.153 | 0.141*** | 0.0590 | 0.182 | 0.170*** | |
| (0.0507) | (0.148) | (0.0500) | (0.0491) | (0.144) | (0.0464) | |
| 0.209*** | 0.444*** | 0.277*** | 0.189*** | 0.390*** | 0.239*** | |
| (0.0529) | (0.120) | (0.0221) | (0.0538) | (0.118) | (0.0214) | |
| Log(M_size) | 0.392*** | 0.712*** | 0.712*** | 0.428*** | 0.745*** | 0.729*** |
| (0.0478) | (0.0388) | (0.0226) | (0.0484) | (0.0378) | (0.0209) | |
| UEBMI Class A | −0.375 | −4.194*** | −2.997*** | −0.401 | −4.675*** | −2.628*** |
| (0.378) | (0.532) | (0.188) | (0.363) | (0.541) | (0.184) | |
| Generic | −0.449 | −0.668 | 5.293*** | 0.0458 | −1.395*** | 1.954*** |
| (0.402) | (0.428) | (0.302) | (0.517) | (0.499) | (0.596) | |
| q1 | −0.0880 | −1.350*** | 0.0155 | −0.0778 | −1.418*** | 0.0220 |
| (0.0886) | (0.105) | (0.0183) | (0.0852) | (0.104) | (0.0169) | |
| q2 | −0.113 | −2.023*** | −0.0361* | −0.123 | −2.074*** | −0.0240 |
| (0.0843) | (0.0928) | (0.0206) | (0.0994) | (0.0921) | (0.0191) | |
| q3 | −0.209** | −0.475*** | 0.0857*** | −0.166* | −0.491*** | 0.0869*** |
| (0.0967) | (0.0784) | (0.0177) | (0.0961) | (0.0758) | (0.0163) | |
| Quarter | Yes | Yes | Yes | Yes | Yes | Yes |
| Constant | 2.798*** | 12.19*** | 3.230*** | 0.330 | 12.09*** | 10.59*** |
| (0.605) | (0.765) | (0.382) | (1.970) | (0.741) | (1.206) | |
| AR2 | 0.5917 | 0.9900 | 0.1887 | 0.7307 | 0.7531 | 0.0193 |
| Hansen test | 0.7091 | 0.1428 | 0.0564 | 0.7902 | 0.3099 | 0.1677 |
| Observations | 462 | 815 | 3,865 | 462 | 815 | 3,865 |
Note: UEBMI, Urban Employees’ Basic Medical Insurance. *p < 0.1, **p < 0.05, and ***p < 0.01.