Table 2

Baseline characteristics by propensity score quintiles of patients

Quintiles
12345
Women, n (%)126 (85.1)121 (81.8)105 (70.9)108 (73.0)105 (70.9)
Age, mean (SD)48.8 (13.4)47.2 (13.3)48.7 (12.4)48.5 (11.5)47.0 (12.0)
Body mass index, mean (SD)27.5 (5.4)25.2 (4.4)24.6 (4.3)24.4 (4.2)23.6 (3.7)
Symptom duration, mean (SD)60.4 (51.6)65.9 (51.1)60.3 (50.7)81.1 (62.5)108.9 (129.6)
Income, n (%)
 <€61072 (48.6)29 (19.6)13 (8.8)16 (10.8)11 (7.4)
 €610–122057 (38.5)74 (50.0)55 (37.2)33 (22.3)21 (14.2)
 €1220–183013 (8.8)28 (18.9)48 (32.4)53 (35.8)55 (37.2)
 €1830–24405 (3.4)12 (8.1)12 (8.1)29 (19.6)35 (23.6)
 >€24401 (0.7)5 (3.4)20 (13.5)17 (11.5)26 (17.6)
Professional status, n (%)
 Full-time37 (25.0)76 (51.4)71 (48.0)88 (59.5)93 (62.8)
 Part-time19 (12.8)9 (6.1)19 (12.8)12 (8.1)19 (12.8)
 Retired32 (21.6)31 (20.9)34 (23.0)24 (16.2)21 (14.2)
 Homemaker6 (4.1)11 (7.4)9 (6.1)17 (11.5)12 (8.1)
 Other54 (36.5)21 (14.2)15 (10.1)7 (4.7)3 (2.0)
Morning stiffness, n (%)
 No1 (0.7)3 (2.0)2 (1.4)14 (9.5)36 (24.3)
 <1 h52 (35.1)46 (31.1)62 (41.9)64 (43.2)69 (46.6)
 >1 h95 (64.2)99 (66.9)84 (56.8)70 (47.3)43 (29.1)
Pain (VAS), mean (SD)60.9 (23.9)62.5 (25.6)53.8 (27.0)53.6 (22.4)48.3 (25.6)
Number of tender joints*, median (IQR)11.0 (7.0 to 16.5)9.0 (5.5 to 15.0)6.0 (4.0 to 13.5)5.0 (3.0 to 10.5)2.0 (1.0 to 5.0)
Number of swollen joints*, median (IQR)8.0 (5.0 to 12.0)7.0 (4.0 to 12.0)6.0 (3.0 to 10.0)6.0 (3.0 to 10.5)3.0 (2.0 to 6.0)
Disease activity score*, mean (SD)5.8 (1.1)5.5 (1.1)5.2 (1.3)4.9 (1.3)4.3 (1.3)
State of health, median (IQR)50.0 (49.5–75.0)55.0 (40.0 to 75.0)60.0 (40.0 to 79.5)67.0 (46.0 to 75.0)70.0 (50.0 to 75.0)
HAQ, mean (SD)1.3 (0.7)1.1 (0.7)1.0 (0.7)0.9 (0.7)0.7 (0.6)
C-reactive protein, median (IQR)12.0 (5.0 to 26.0)9.0 (0.0 to 24.5)8.5 (0.0 to 25.5)8.0 (0.0 to 24.5)9.0 (0.0 to 21.0)
Rheumatoid factor or anti-CCP antibodies positivity, n (%)80 (54.1)83 (56.1)85 (57.4)84 (56.8)82 (55.4)
Human leukocyte antigen DRB*01 or 04 positivity, n (%)71 (48.0)78 (52.7)76 (51.4)74 (50.0)86 (58.1)
Erosion score, median (IQR)1.0 (0.0 to 4.0)1.0 (0.0 to 3.0)2.0 (0.0 to 5.0)1.0 (0.0 to 3.0)1.0 (0.0 to 3.0)
Missing values131791013
  • Quintile 1 represents patients with the lowest probability of being treated in accordance with the recommendations; quintile 5 represents patients with the highest probability of being treated in accordance with the recommendations, according to baseline characteristics.

  • anti-CCP, anti-cyclic citrullinated peptide; HAQ, health assessment questionnaire; VAS, visual analogue scale.

  • * disease activity score on 28 joints: number of tender and swollen joints among 28 joints.