Long-term effects of cranial irradiation and intrathecal chemotherapy in treatment of childhood leukemia: a MEG study of power spectrum and correlated cognitive dysfunction

Table 3 Global relative power differences

MANOVA	Between-Subjects effects						Simple contrasts (versus controls)
	AGE	Sign. (p)	Effect size (η_p ²)	GROUP	Sign. (p)	Effect size (η_p ²)	CT + CRT group		CT group
	AGE	Sign. (p)	Effect size (η_p ²)	GROUP	Sign. (p)	Effect size (η_p ²)	Sign. (p)	Cohen’s d	Sign. (p)	Cohen’s d
Multivariate tests	F[5,59] = 2.516	0.039	0.176	F[10,118] = 1.809	0.066*	0.133	N/A	N/A	N/A	N/A
θ_ln	F[1,63] = 12.404	0.001	0.164	F[2,63] = 2.191	0.120	0.065	0.069*	0.190	0.582	0.061
α1_ln	F[1,63] = 1.589	0.212	0.025	F[2,63] = 1.057	0.354	0.032	0.152	0.335	0.693	0.201
α2_ln	F[1,63] = 4.404	0.040	0.065	F[2,63] = 5.757	0.005**	0.155	0.006**	−0.719	0.243	0.207
β_ln	F[1,63] = 1.509	0.224	0.023	F[2,63] = 0.511	0.602	0.016	0.889	0.171	0.347	−0.371
γ_ln	F[1,63] = 1.810	0.183	0.028	F[2,63] = 1.684	0.194	0.051	0.117	−0.386	0.218	−0.448

Differences were tested between the CT + CRT group (n = 14), the CT group (n = 18) and controls (n = 35) using multivariate GLM, with age as a covariate. * = statistical trend, ** = significant difference.

ISSN: 1471-2377