Table 1 Main features of two cohorts of patients with rheumatoid arthritis

Females, %

73.1

76.8

Mean age, years

65.6 ± 14.5^a

46.5 ± 14.5^a

Duration of follow-up, months

123.8 ± 91.5^a

171.6 ± 123.6^a

Extraarticular manifestations, %

22.2

–

Presence of joint damage, %

–

100

RF-positive, %

64.8

74.6

ACPA-positive, %

62.2

74.1

Number of previous DMARDs

2.2 ± 1.5^a

1.7 ± 1.5^a

Number of previous biologic therapies

1.8 ± 1.2^a

0.6 ± 0.9^a