Table 3. Results of single probit and bivariate probit model on 7-day in-hospital mortality.

	Single probit model		Bivariate probit model
	Coefficient	Standard error	Coefficient	Standard error
Certified stroke hospital	0.078	0.035	−0.370***	0.139
Sex (male = 1)	−0.061*	0.032	−0.055*	0.084
Age	0.003**	0.001	0.003*	0.001
Functional deficit on admission
mRS = 1
mRS = 2–3, JCS = 0–3	0.298**	0.143	0.302**	0.140
mRS = 4–5, JCS = 0–3	0.929***	0.136	0.922***	0.133
mRS = 4–5, JCS = 10–30	1.562***	0.137	1.555***	0.135
mRS = 4–5, JCS = 100–300	2.223***	0.138	2.206***	0.138
First-stage regression
Smaller differential distancea	—	—	0.769***	0.014

JCS, Japan Coma Scale; mRS, modified Rankin Scale.

^aSmaller differential distance, differential distance of ≤1.052 km in urban regions and ≤1.741 km in rural regions.

*P < 0.1, **P < 0.05, ***P < 0.01.