Table 3.

Logits scores regressed by raw summed score for the nine items model.

	Model estimates
	Coefficient	SE	t	p
Constant	−3.4184	0.0159	−214.815	<0.0001
(Raw summed score)3– cubic trend	0.0003	0.0001	51.448	<0.0001
(Raw summed score)2– quadratic trend	−0.0176	0.0003	−58.630	<0.0001
Raw summed score – linear trend	0.4026	0.0041	98.605	<0.0001
	Model fit
	R	R2	Adjusted R2
	0.995	0.989	0.989