Table 2

Descriptive characteristics for patients with RA that do and do not receive rheumatology care and influence of various factors on receipt of rheumatology care within 3 months of suspected diagnosis by a primary care physician

CharacteristicSeen by a rheumatologistMultivariate analysis
YesNoCrude ORAdjusted*OR
n=11 694N=8066(95% CI)(95% CI)
Demographics
 Age, mean (SD)53.8 (15.9)53.6 (16.7)1.00 (1.00 to 1.00)1.00 (1.00 to 1.00)
 Male sex, n (%) (REF=female)3341 (28.6)2328 (28.9)1.01 (0.95 to 1.07)1.04 (0.97 to 1.11)
 Income quintile, n(%) (REF=1—low)59 (0.5)50 (0.6)REFREF
  22197 (18.8)1693 (21)1.10 (1.00 to 1.20)1.08 (0.98 to 1.18)
  32359 (20.2)1657 (20.5)1.12 (1.03 to 1.23)1.11 (1.01 to 1.22)
  42407 (20.6)1627 (20.2)1.12 (1.02 to 1.23)1.09 (0.99 to 1.20)
  52305 (19.7)1581 (19.6)1.22 (1.11 to 1.34)1.18 (1.07 to 1.30)
Calendar-year of cohort entry (REF=2000)
 20001110774REFREF
 200111107680.99 (0.87 to 1.13)0.99 (0.87 to 1.14)
 200210747361.00 (0.87 to 1.14)1.00 (0.87 to 1.15)
 200311548300.96 (0.85 to 1.10)0.99 (0.87 to 1.13)
 200411878720.94 (0.83 to 1.08)0.99 (0.87 to 1.14)
 200512318281.05 (0.92 to 1.20)1.12 (0.98 to 1.28)
 200611797821.07 (0.94 to 1.22)1.13 (0.98 to 1.29)
 200712378181.07 (0.94 to 1.23)1.14 (0.99 to 1.31)
 200812688851.01 (0.89 to 1.16)1.10 (0.96 to 1.26)
 200911447731.03 (0.90 to 1.18)1.10 (0.95 to 1.27)
Comorbidity: number of Hopkins ADGs in the 2 years prior to entry, n (%) (REF=<5)
 <53031 (25.9)2198 (27.3)REFREF
 5–95802 (49.6)3988 (49.4)1.04 (0.97 to 1.12)1.04 [0.97 to 1.12]
 10+2861 (24.5)1880 (23.3)1.08 (0.99 to 1.18)1.07 [0.98 to 1.17]
Hospitalisation for RA prior to rheumatologist visit/end of study period, n(%)71 (0.6)41 (0.5)1.24 (0.84 to 1.84)1.34 [0.89 to 2.02]
Geographic
 Patient rural residence, n(%); (REF=urban)1636 (14.0)1560 (19.3)0.70 (0.64 to 0.76)0.92 (0.83 to 1.01)
 Rheumatology supply per 100 000 adults, mean (SD)1.6 (1.1)1.4 (1.0)1.16 (1.12 to 1.19)1.35 (1.13 to 1.60)
 Distance to rheumatologist (km), mean (SD)17.8 (64.24)33.6 (75.89)n/an/a
 Remote distance (≥100 km to rheumatologist), n(%)312 (2.7)735 (9.1)0.29 (0.25 to 0.34)0.51 (0.41 to 0.64)
Primary care physician
 Male sex, n (%) (REF=female)8069 (69.0)5803 (71.9)0.83 (0.77 to 0.89)0.87 (0.81 to 0.95)
 Years since graduation, mean (SD)24.3 (10.48)24.6 (10.53)1.00 (0.99 to 1.00)1.00 (0.99 to 1.00)
Practice type†, n (%) (REF=fee-for-service)
 Traditional and enhanced fee-for-service11 085 (94.8)7699 (95.5)REFREF
 Blended capitation models609 (5.2)367 (4.5)1.14 (0.98 to 1.32)1.15 (0.99 to 1.34)
  • *Adjusted for all covariates including: patient demographics, clinical factors, primary care physician characteristics, provider continuity and geographic characteristics (including regional variation by regional health service planning areas LHINs not reported here).

  • †Practice types: blended capitation models (FHNs, FHOs, FHTs, an interprofessional team model composed of FHNs and FHOs), enhanced fee-for-service models (FHGs and other groups) and solo fee-for-service practitioners (those who did not belong to a model).

  • ADG, Adjusted Diagnostic Groups; FGH, Family Health Group; FHN, Family Health Network; FHO, Family Health Organisation; FHT, Family Health Team; LHIN, Local Health Integration Network; RA, rheumatoid arthritis.