. 2013 Oct 18;8(10):e76658. doi: 10.1371/journal.pone.0076658

Table 4. Comparisons of T2^* values in the posterior meniscus among three groups over 18 weeks using multiple linear regression with generalized estimating equations.

Posterior meniscus Parameter	B	Std. error	Waldchi-square	p-value
(Intercept)	5.848	0.1580	1369.247	<0.001
Group 3^a (Sham vs. Control)	0.105	0.2117	0.244	0.621
Group 2^a (ACLX vs. Control)	0.111	0.1822	0.372	0.542
Week 18 vs. Week 0	–0.052	0.1801	0.084	0.772
Week 13 vs. Week 0	–0.167	0.2314	0.518	0.472
Week 4 vs. Week 0	–0.268	0.2468	1.176	0.278
Group 3^* Week 18	0.022	0.2489	0.008	0.929
Group 3^* Week 13	–0.068	0.3147	0.047	0.829
Group 3^* Week 4	–0.024	0.3617	0.004	0.947
Group 2^* Week 18	1.884	0.2660	50.167	<0.001
Group 2^* Week 13	1.595	0.2580	38.201	<0.001
Group 2^* Week 4	1.158	0.3359	11.895	0.001

Group 1 = Control group; Group 2 = ACLX group; Group 3 = Sham group.

The interaction between two variables in the models.

B: regression coefficient.

Table 4. Comparisons of T2* values in the posterior meniscus among three groups over 18 weeks using multiple linear regression with generalized estimating equations.