Table 4.

Time intervals to various stages from symptom onset to DMARD initiation (months).

VariableMeanMedianMaximum ValueMinimum ValueSDIQR
Symptoms to DMARD13.336.35120019.198.72
Symptoms to first MD visit1.930.0063–98.132.01
First MD visit to rheumatology referral6.562.01119013.367.01
Rheumatology referral to rheumatology appointment1.641.021402.101.84
Rheumatology appointment to RA diagnosis1.380.003004.310.99
RA diagnosis to DMARD0.730.0031–5*2.910.99
Symptoms to DMARD (data from patient interview)15.007.01281026.8111.09
Symptoms to first MD visit (data from patient interview)3.390.00277–120.951.97
  • * Two patients were started on DMARD by general practitioner, before diagnosis of RA by a rheumatologist. IQR: interquartile range; DMARD: disease-modifying antirheumatic drug; RA: rheumatoid arthritis.