Table 1

Comparison of clinic and Optic Neuritis Treatment Trial (ONTT) subject visual fields

PresentationFinal visit
Clinic (n=141)ONTT (n=457)P valueClinic (n=85)ONTT (n=457)P value
Mean mean deviation (MD) (dB)−14.1±10.0−21.5±10.2<0.001−3.5±6.2−3.5±5.91.00
Quartile 1 MD (dB)−21.3−31.9−3.6−3.5
Quartile 2 MD (dB)−11.3−23.1−1.5−1.8
Quartile 3 MD (dB)−5.5−13.2−0.3−0.6
Quartile 4 MD (dB)−1.9−1.41.63.2
MD IQR (dB)15.819.33.32.8
Number of patients with MD<−15 dB57 (40%)315 (69%)<0.0016 (7%)23 (5%)0.70
Number of patients with −15≤MD<−7 dB34 (24%)91 (20%)0.216 (7%)32 (7%)1.0
Number of patients with −7≤MD<−2 dB49 (35%)46 (10%)<0.00122 (26%)160 (35%)0.11
Number of patients with MD≥−2 dB1 (0%)5 (1%)0.2451 (60%)242 (53%)0.18