Table 2.

Contrast estimate results from sway intensities GEE model

Label	Estimate ± SE	95% CL		χ2	P-value
Between—group differences at different bevel degrees
Minor SBO vs. Control at 0°	2.5174 ± 0.2016	2.1223	2.9126	155.90	< 0.0001
Major SBO vs. Control at 0°	3.0112 ± 0.2299	2.5605	3.4619	171.49	< 0.0001
Minor vs. Major SBO at 0°	−0.4938 ± 0.2907	−1.0635	0.0760	2.89	0.0894
Minor SBO vs. Control at 10°	1.3675 ± 0.2006	0.9744	1.7607	46.48	< 0.0001
Major SBO vs. Control at 10°	2.4657 ± 0.2838	1.9095	3.0218	75.50	< 0.0001
Minor vs. Major SBO at 10°	−1.0981 ± 0.3451	−1.7745	−0.4218	10.13	0.0015
Minor SBO vs. Control at 20°	1.3268 ± 0.1788	0.9763	1.6773	55.04	< 0.0001
Major SBO vs. Control at 20°	2.2714 ± 0.2654	1.7512	2.7916	73.23	< 0.0001
Minor vs. Major SBO at 20°	−0.9446 ± 0.3167	−1.5654	−0.3239	8.90	0.0029
Within—group variations
Minor SBO, 10° vs. 0°	−0.3586 ± 0.1816	−0.7146	−0.0026	3.90	0.0484
Minor SBO, 20° vs. 0°	−0.1383 ± 0.1818	−0.4945	0.2180	0.58	0.4469
Major SBO, 10° vs. 0°	0.2458 ± 0.2667	−0.2769	0.7684	0.85	0.3567
Major SBO, 20° vs. 0°	0.3126 ± 0.2696	−0.2157	0.8409	1.34	0.2462
Control, 10° vs. 0°	0.7913 ± 0.0657	0.6626	0.9200	145.14	< 0.0001
Control, 20° vs. 0°	1.0524 ± 0.0813	0.8931	1.2117	167.69	< 0.0001

Contrasts and estimates were statistically assessed in the GEE model listed in Table 1 by using SAS 9.13

GEE Generalized estimating equations, SE standard error, CL confidence limits