I dette studie fik patienterne en dosis Enbrel på 50 mg eller placebo én gang om ugen i 12 uger, og derefter fik alle patienterne open- label Enbrel 50 mg én gang om ugen i yderligere 12 uger.
Patients in this study received a dose of 50 mg Enbrel or placebo once weekly for 12 weeks and then all patients received open-label 50 mg Enbrel once weekly for an additional 12 weeks.