Disease-modifying antirheumatic drug prescription patterns in adult rheumatoid arthritis patients in routine clinical practice in Spain.

MTX was the most-used csDMARD as first and second-line therapy together with corticosteroids. The combination of two or more csDMARDs as first-line treatment was very infrequent. MTX toxicity and intolerance were higher and more significant than inefficacy but progressively decreased with use.