. 2022 Feb 15;10:850872. doi: 10.3389/fpubh.2022.850872

Table 5.

Estimated coefficients of the control variables.

Regions	Variables	Coefficient	Estimated value	p-value
East	lngdp	${\hat{θ}}_{1}$	−0.6225***	0.0010
	lnincome	${\hat{θ}}_{2}$	0.9953***	0.0000
	edu	${\hat{θ}}_{3}$	−0.0172	0.6610
	med	${\hat{θ}}_{4}$	−0.0049**	0.0490
	inst	${\hat{θ}}_{5}$	−0.0017	0.8270
Center	lngdp	${\hat{θ}}_{1}$	−0.4481***	0.0000
	lnincome	${\hat{θ}}_{2}$	0.8883***	0.0000
	edu	${\hat{θ}}_{3}$	0.0022	0.9460
	med	${\hat{θ}}_{4}$	0.0279**	0.0290
	inst	${\hat{θ}}_{5}$	−0.0154**	0.0440
West	lngdp	${\hat{θ}}_{1}$	−0.3233***	0.0020
	lnincome	${\hat{θ}}_{2}$	0.8537***	0.0000
	edu	${\hat{θ}}_{3}$	−0.0421	0.1370
	med	${\hat{θ}}_{4}$	−0.0007	0.9460
	inst	${\hat{θ}}_{5}$	−0.0015	0.8990

*** and ** indicate significance levels at 1 and 5%.