Table 3.

Parameter estimates from the traditional three-step approach

Study conditions				Estimated parameters
No.	C on z	x with z	y on z	Class 1				Class 2				Step-1		Step-3
				Intercept (β00=.00)		Slope (β10=.20)		Intercept (β01=.50)		Slope (β11=.70)		Class mean (α0=.00)		C on z (γ0)		Int.Prob (α0=.00)
1	0	0	0	−.01	(.05)	.20	(.04)	.50	(.04)	.70	(.03)	−.02	(.25)	−.02	(.25)	−.01	(.08)
2	0	.5	0	.00	(.05)	.20	(.04)	.50	(.04)	.70	(.03)	.02	(.24)	.07	(.41)	.02	(.27)
3	0	0	.5	−.03	(.11)	.19	(.06)	.50	(.06)	.70	(.06)	−.07	(.43)	−2.73	(.65)	−.46	(.77)
4a	0	.5	.5	−.02	(.09)	.45	(.06)	.51	(.06)	.95	(.05)	−.02	(.42)	−2.53	(2.20)	.51	(1.46)
5	−.69	0	0	.00	(.05)	.20	(.04)	.50	(.04)	.70	(.03)	.00	(.23)	−.70	(.12)	.00	(.25)
6	−.69	.5	0	.02	(.07)	.20	(.06)	.48	(.03)	.69	(.03)	−.26	(.30)	−.40	(.34)	−.25	(.35)
7	−.69	0	.5	−.17	(.10)	.20	(.05)	.66	(.05)	.70	(.04)	−.02	(.29)	−3.73	(.50)	−.26	(.62)
8	−.69	.5	.5	−.20	(.17)	.44	(.06)	.61	(.05)	.93	(.05)	−.38	(.38)	−2.16	(.75)	−.45	(.64)
9	−1.1	0	0	.00	(.05)	.20	(.04)	.50	(.03)	.70	(.03)	.01	(.26)	−1.09	(.16)	.01	(.30)
10	−1.1	.5	0	.04	(.10)	.20	(.07)	.47	(.04)	.69	(.03)	−.37	(.34)	−.70	(.32)	−.37	(.40)
11	−1.1	0	.5	−.24	(.09)	.20	(.04)	.72	(.05)	.70	(.04)	−.01	(.24)	−3.89	(.43)	−.18	(.54)
12	−1.1	.5	.5	−.33	(.24)	.45	(.07)	.64	(.05)	.91	(.05)	−.54	(.42)	−2.29	(.64)	−.73	(.66)

^aNote.Three cases with extreme value for the C on z class probability (< −10) are excluded from calculating the mean of the parameter estimates.