Table 8.

Disaggregated regression results for market share (ms)

	Dependent variable
	Quality
	Pooled	Fixed effects	Random effects
	(2)	(4)	(6)
Cataract: i02-02 ms	0.040	−2.812	−0.173
Cataract: i02-03a ms	−1.024**	−0.327	−1.038**
Cataract: i02-03b ms	−0.775**	−2.707*	−0.906**
Adenoid and tonsil: i10-02 ms	0.361	−2.316	0.018
Adenoid and tonsil: i10-04a ms	0.901	−3.107	0.744
Adenoid and tonsil: i10-04b ms	−0.369	3.018	−0.334
Adenoid and tonsil: i10-04c ms	−1.150*	3.782	−0.556

* $p<0.1$; ** $p<0.05$; *** $p<0.01$. We report the estimated market-share coefficient from the pooled, fixed-effects, and random-effects models, which also include the control variables. The estimated coefficient of the control variables are available from the authors by request. We report the MacKinnon and White Heteroskedasticity-Consistent standard errors (in parentheses under coefficients). We used data from the period 2008–2011