Figure 2From: Comparison of the efficacy and safety of two starting dosages of prednisolone in early active rheumatoid arthritis (CORRA): study protocol for a randomized controlled trial Statistical analyses procedure of the CORRA study. CORRA: Comparison of the efficacy and safety of two starting dosages of prednisolone in early active rheumatoid arthritis, Pl: placebo group, V10: group starting with 10 mg prednisolone daily, V60: group starting with 60 mg prednisolone daily.Back to article page