Table 4.

Comparison of alternative models for each variable

	Variance explained		Model fit
	R		AIC		BIC
	Model 1	Model 2	Model 1	Model 2	Model 1	Model 2
Correctness	63.8%	65.7%	−59.617	−56.313	−49.847	−46.638
Efficiency	57.9%	58.6%	−412.078	−398.820	−402.261	−398.097
Ease of use	4.8%	14.1%	232.593	232.281	241.917	244.004
Usefulness	10.9%	13.7%	218.295	217.452	228.113	227.176
Intention to use	4.8%	6.2%	270.298	268.847	280.115	278.570