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Table 1 Demographics of the unique individuals within the study cohort consisting of Swedish early RA patients diagnosed 1999–2019, treated with MTX in monotherapy as their first prescribed DMARD and with a first-degree relative concordant for early RA and treatment with MTX in DMARD monotherapy; stratification by treatment persistence status

From: Does persistence to methotrexate treatment in early rheumatoid arthritis have a familial component?

 

MTX persistence at 1 year

MTX persistence at 3 years

Persistent, N = 231

Non-persistent, N = 116

Persistent, N = 175

Non-persistent, N = 172

Female (%)

159 (69%)

87 (75%)

117 (67%)

129 (75%)

Seropositive (%)

169 (75%)a

86 (75%)b

126 (74%)a

129 (75%)b

Glucocorticoids at baseline (%)

112 (48%)

51 (44%)

80 (46%)

83 (48%)

Mean age at the start of MTX (SD)

60 (14)

53 (15)

62 (13)

53 (15)

Median year of the start of MTX (Q1–Q3)

2012 (07–16)

2011 (06–15)

2013 (08–16)

2011 (07–15)

Median overall number of FDRs identified (Q1–Q3)

4 (3–5)

4 (3–5)

4 (3–5)

4 (3–5)

RR (95% CI)

1.02 (0.87–1.20)

1.41 (1.14–1.74)

h2 (95% CI)

0.08 (0*–0.43)

0.58 (0.27–0.89)

  1. DMARD disease-modifying anti-rheumatic drug, FDR first-degree relative, MTX methotrexate, RA rheumatoid arthritis
  2. *Truncated confidence interval boundary
  3. aFive of these had missing status
  4. bOne of these had missing status