Table 2.

Mean ring MTR in healthy controls and patients with optic neuritis

Ring	Mean ± SE MTR in pu		Mean ± SE MTR in pu
	Healthy controls	All optic neuritis	Optic neuritis subgroups
			Convert to CDMS <2 y	Convert to CDMS 2–5 y	Did not convert to CDMS
	(n = 37)	(n = 71)	(n = 18)	(n = 13)	(n = 27)
1	38.364 ± 0.138	37.670 ± 0.102	37.371 ± 0.183	37.831 ± 0.180	37.805 ± 0.203
		P = 0.000	P = 0.000	P = 0.062	P = 0.013
2	38.334 ± 0.113	37.836 ± 0.085	37.639 ± 0.166	37.773 ± 0.205	37.951 ± 0.156
		P = 0.001	P = 0.001	P = 0.020	P = 0.043
3	38.254 ± 0.095	37.912 ± 0.080	37.862 ± 0.176	37.946 ± 0.209	37.903 ± 0.133
		P = 0.007	P = ns	P = ns	P = ns
4	38.293 ± 0.080	37.959 ± 0.075	37.944 ± 0.158	37.942 ± 0.190	37.918 ± 0.132
		P = 0.003	P = ns	P = ns	P = ns
5	38.232 ± 0.080	37.936 ± 0.076	37.901 ± 0.163	37.916 ± 0.204	37.859 ± 0.126
		P = 0.009	P = ns	P = ns	P = ns
6	38.109 ± 0.087	37.827 ± 0.077	37.822 ± 0.162	37.807 ± 0.209	37.765 ± 0.129
		P = 0.017	P = ns	P = ns	P = ns
7	38.006 ± 0.083	37.751 ± 0.074	37.751 ± 0.166	37.772 ± 0.194	37.706 ± 0.124
		P = 0.025	P = ns	P = ns	P = ns
8	38.024 ± 0.084	37.774 ± 0.073	37.754 ± 0.174	37.805 ± 0.192	37.740 ± 0.115
		P = 0.027	P = ns	P = ns	P = ns
9	38.113 ± 0.084	37.864 ± 0.075	37.805 ± 0.187	37.942 ± 0.192	37.822 ± 0.117
		P = 0.030	P = ns	P = ns	P = ns
10	38.187 ± 0.085	37.952 ± 0.078	37.850 ± 0.191	38.048 ± 0.198	37.945 ± 0.123
		P = 0.044	P = ns	P = ns	P = ns

Independent sample t-tests were used to compare the healthy control and whole optic neuritis groups; one-way ANOVA to compare the optic neuritis subgroups. pu = percentage units; ns = not significant. Bold P-values < 0.05.