I retrospektive meta- analyser, som inkluderede data fra begge undersøgelser, blev der fundet en generel virkning af behandlingen, som var statistisk signifikant (p = 0, 0076; 8 millioner IE Betaferon sammenlignet med alle placebo- patienter).
In retrospective meta-analyses including the data of both studies, an overall treatment effect was found which was statistically significant (p=0.0076; 8 million IU Betaferon versus all placebo patients).