. 2020 Dec 7;22(2):229–242. doi: 10.1007/s10198-020-01245-1

Table 4.

Generic Market Share

Dep. Variable: ms	(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
	Relative P	Relative P	Relative P	Relative P	Relative P	Relative P	Relative P	Relative P	Branded P	Relative P
L.ms	0.4083***	0.5140***	0.6311***	0.7672***	0.5772***	0.5986***	0.4890**	0.39578	0.4539***	0.4444***
	(0.1087)	(0.1056)	(0.1861)	(0.1975)	(0.1395)	(0.1526)	(0.1935)	(0.2596)	(0.0868)	(0.1064)
Sales	0.0071	0.0151*	0.0107*	0.0105*	0.0141*	0.0229*	0.0141	0.06072*	0.0071	0.0096
	(0.0058)	(0.0080)	(0.0062)	(0.0062)	(0.0072)	(0.0124)	(0.0199)	(0.0338)	(0.0056)	(0.0061)
Num	-0.0045	− 0.0084	-0.0070	− 0.0060	− 0.0082	− 0.0126	− 0.0749	− 0.12568	− 0.0080*	− 0.0060
	(0.0045)	(0.0054)	(0.0043)	(0.0039)	(0.0050)	(0.0081)	(0.0969)	(0.1339)	(0.0044)	(0.0047)
Price	− 0.0186*	0.0298	0.0294	0.0958	0.0292	0.0848	0.0402	0.02967	0.0444***	− 0.0089
	(0.0100)	(0.0298)	(0.0671)	(0.0855)	(0.0272)	(0.0574)	(0.0536)	(0.0804)	(0.0154)	(0.0257)
Years LOP	− 0.0057	− 0.0106*	− 0.0144**	− 0.0176***	− 0.0230	− 0.0140	− 0.0651	− 0.10433	− 0.0074	− 0.0067
	(0.0053)	(0.0058)	(0.0056)	(0.0058)	(0.0148)	(0.0084)	(0.0814)	(0.1113)	(0.0045)	(0.0055)
$L O P^{2}$					0.0010
					(0.0011)
Difficult	0.0342	− 0.0672	− 0.1929***	− 0.1381**	− 0.0621	− 0.1908	− 0.0243	0.01400	− 0.0154	− 0.2800
	(0.0269)	(0.0821)	(0.0643)	(0.0503)	(0.0790)	(0.1668)	(0.1424)	(0.2155)	(0.0214)	(0.4623)
Combination	− 0.0056	− 0.0247	− 0.0154	− 0.0132	− 0.0250	− 0.0417	− 0.0550	− 0.07288	− 0.0160	0.3364*
	(0.0141)	(0.0193)	(0.0137)	(0.0133)	(0.0186)	(0.0324)	(0.0936)	(0.1442)	(0.0133)	(0.1735)
NICE TA Rest	− 0.0992***	− 0.0977***	− 0.1249***	− 0.1320***	− 0.0954***	-0.0971***	− 0.7158	− 0.52535	− 0.0969***	− 0.0910***
	(0.0273)	(0.0289)	(0.0211)	(0.0179)	(0.0257)	(0.0334)	(0.7576)	(0.6289)	(0.0258)	(0.0277)
NICE TA Rec	0.1813***	0.2213***	0.1129**	0.1037**	0.1962***	0.2643***	0.0836	0.00858	0.2073***	0.1591***
	(0.0272)	(0.0558)	(0.0467)	(0.0436)	(0.0643)	(0.0857)	(0.1829)	(0.2422)	(0.0311)	(0.0301)
CatM							0.0387	0.54791
							(0.0779)	(0.4500)
CatM#Sales								− 0.05532
								(0.0499)
Diff#Sales										0.0260
										(0.0400)
Comb#Sales										− 0.0330*
										(0.0170)
N	200	200	164	156	200	200	184	184	200	200
Time/ATC Dummies	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
AR(1)	0.498	0.356	0.301	0.247	0.336	0.309	0.491	0.481	0.368	0.450
AR(2)	0.309	0.236	0.494	0.625	0.131	0.207	0.231	0.345	0.202	0.283
Hansen	0.487	0.616	0.426	0.924	0.570	0.839	0.933	0.735	0.980	0.697

Notes: Standard errors in parentheses. One-step estimates shown. Log of ms and Sales. AR(1) and AR(2) are tests for first- and second-order serial correlation. P-values shown for AR(1), AR(2) and Hansen tests. Price variables are yearly averages. Reference categories for difficulty of manufacturing is Easy and for NICE TA is No TA issued. Significance levels: ***p<0.01, **p<0.05, *p<0.1