Table 6. Comparisons of zonal T2 values among three age groups and two gender groups after adjusting for the BMI effect in multiple linear regression analysis with GEE.

			95%		Wald
Parameters	B	SE	Confidence	Interval	Chi-square	P-value
White zone
Group 3 vs. Group 1*	2.496	0.4369	1.640	3.353	32.636	<0.001
Group 2 vs. Group 1*	1.071	0.3916	0.303	1.838	7.475	0.006
Sex (M)×Group 3	–1.019	0.4834	–1.967	–0.072	4.447	0.035
Sex (M)×Group 2	–0.962	0.4571	–1.857	–0.066	4.424	0.035
Red/White zone
Group 3 vs. Group 1*	2.767	0.5556	1.678	3.856	24.803	<0.001
Group 2 vs. Group 1*	1.161	0.4033	0.370	1.951	8.282	0.004
Sex (M)×Group 3	–1.059	0.6360	–2.305	0.188	2.771	0.096
Sex (M)×Group 2	–0.357	0.4585	–1.255	0.542	0.605	0.437
Red zone
Group 3 vs. Group 1*	1.171	0.6485	–0.100	2.442	3.260	0.071
Group 2 vs. Group 1*	–0.079	0.6600	–1.373	1.214	0.014	0.905
Sex (M)×Group 3	–0.181	0.7847	–1.718	1.357	0.053	0.818
Sex (M)×Group 2	–0.077	0.7615	–1.569	1.416	0.010	0.920

^*Group 1∶ 20Age34; Group 2∶ 35Age49; Group 3∶ 50Age70 (Group 1 is the reference group).

Sex (M: Men; F: Women [the reference group]).

Abbreviations: BMI, body mass index; B, regression coefficient; SE, standard error.