Table 3

 Demographic and reproductive characteristics of patients with rheumatoid arthritis with at least one pregnancy (n = 110) at baseline, divided by history of miscarriages

No miscarriages (n = 74)One or more miscarriages (n = 36)
Values are mean (SD) or n (%).
*p<0.05 v group without miscarriages.
DMARD, disease modifying antirheumatic drug.
Age at interview (years)59 (14)62 (15)
Age at first visit (years)55 (14)58 (15)
Duration of complaints at first visit (days)186 (149)236 (181)
DMARD use (%)63 (85)33 (92)
Interval to start of first DMARD (days)84 (107)109,3 (203)
Rheumatoid factor positivity (%)38 (55)23 (66)
Pregnant before rheumatoid arthritis onset (%)72 (97)34 (94)
Age at first pregnancy (years)26 (5)27 (5)
Number of pregnancies2.3 (1.1)4.1 (1.9)*
Number of children2.3 (1.1)2.8 (1.9)
Marital status, currently married (%)59 (80)26 (72)
Ever smoked (%)20 (27)6 (17)
Education: college or university (%)18 (24)9 (25)