Use of Expectation Disconfirmation Theory to Test Patient Satisfaction with Asynchronous Telemedicine for Diabetic Retinopathy Detection

Table 3

Post hoc assessment of self-selection bias.

Variable	Study sample		Dropped cases		T-Test
	Mean	Std. Dev.	Mean	Std. Dev.	t-Stat.	Sig.
Service Quality Expectation (pre)	3.02	1.19	3.4	1.30	1.29	P=0.23
Service Preference (pre)	3.43	1.26	3.16	1.28	0.77	P=0.44