TABLE 6.

Two-way ANOVA for the variable Orbitale Average. The two factors tested were Treatment (BAMP and RME/FM) and the ZMS stages (A, B and C)

Orbitale average Antero-posterior
Source of variation	DF	SS	MS	F	P
ZMS Stage	2	1.534	0.767	1.636	.211
Treatment	1	10.953	10.953	23.368	<.001
ZMS Stage × Treatment	2	3.236	1.618	3.452	.044
Residual	31	14.531	0.469
Total	36	30.687	0.852
Comparisons for factor: Treatment
Comparison	Diff of means	t	P	Critical level	Significant?
BAMP vs RME/FM	1.2	4.834	.000	0.050	Yes
Comparisons for factor: Treatment within ZMS Stage B
BAMP vs RME/FM	1.0	3.264	.003	0.050	Yes
Comparisons for factor: Treatment within ZMS Stage C
BAMP vs RME/FM	0.4	0.826	.415	0.050	No
Comparisons for factor: Treatment within ZMS Stage A
BAMP vs RME/FM	2.0	4.427	.000	0.050	Yes
Comparisons for factor: ZMS Stage within BAMP
Stage A vs Stage C	1.3	3.237	.003	0.017	Yes
Stage B vs Stage C	0.8	2.127	.041	0.025	No
Stage A vs Stage B	0.6	1.423	.165	0.050	No
Comparisons for factor: ZMS Stage within RME/FM
Stage B vs Stage A	0.4	1.031	.311	0.017	No
Stage C vs Stage A	0.3	0.674	.505	0.025	No
Stage B vs Stage C	0.1	0.226	.823	0.050	No
Supero-inferior
Source of variation	DF	SS	MS	F	P
ZMS Stage	2	1.340	0.670	0.847	.438
Treatment	1	0.248	0.248	0.313	.580
ZMS Stage × Treatment	2	1.391	0.695	0.879	.425
Residual	31	24.537	0.792
Total	36	27.919	0.776
3D
ZMS Stage	2	3.395	1.697	3.853	.032
Treatment	1	4.671	4.671	10.603	.003
ZMS Stage × Treatment	2	1.675	0.838	1.901	.166
Residual	31	13.657	0.441
Total	36	22.710	0.631
Comparisons for factor: ZMS Stage
Comparison	Diff of means	t	P	Critical level	Significant?
Stage B vs Stage C	0.7	2.776	.009	0.017	Yes
Stage A vs Stage C	0.5	1.532	.136	0.025	No
Stage B vs Stage A	0.3	0.970	.339	0.050	No
Comparisons for factor: Treatment
BAMP vs RME/FM	0.8	3.256	.003	0.050	Yes

Differences of means were calculated on the least-square means (mm).

DF, Degrees of Freedom; SS, sum of squares; MS, mean squares.