Table 1

Baseline demographics and patient characteristics associated with different time lags from symptom onset to the first rheumatological encounter

Delayed diagnosis of >6 monthsDelayed diagnosis of >1 yearDelayed diagnosis of >2 years
No (n=86)Yes (n=197)p ValueNo (n=149)Yes (n=134)p ValueNo (n=202)Yes (n=81)p Value
Age (years±SD)53±1155±120.3253.8±1255.4±110.2554±1256±120.20
Gender—% Male46.5480.8548460.7347.8460.81
Smoking—%41450.4841.9450.5843.843.80.98
BMI (score±SD)29±629±50.7729±5.528.9±50.4629.7±5.627.4±4.60.001
Low education status—%15230.1316250.05417.727.50.060
PsO age of onset (years±SD)27±1328±150.7427.6±1427.4±140.8827.5±1427.7±140.85
PsA age of onset (years±SD)36±1334±120.4535±1334.5±120.5735±1334±120.51
Time from PsO to PsA development—(years±SD)8±117±100.287.4±107±110.397.7±106.2±120.28
PsA duration (years±SD)17±920±90.00818±920.8±90.01518±921.7±8.90.009
Family history of PsO—%67610.296362.80.9461.6660.46
Family history of PsA—%16170.8417170.9319110.10
Oligoarthritis—%125.50.07950.18850.31
Dactylitis—%54530.9154510.6252550.67
Deformed joints—%51710.00261690.1860.6750.022
Number of deformed joints (score±SD)3.8±5.86.7±8.60.0015±76.7±90.105±78±90.01
DMARDs free—%21100.011880.011670.060
Number of DMARDs failure—(score±SD)0.98±0.781.3±1.00.0021.2±0.981.2±1.00.911.2±0.981.2±1.00.91
Erosions—%2155<0.0013951.40.0339.956.30.01
Osteolysis—%6180.00611190.05912.420.30.09
Sacroiliitis—%15290.0120300.05922.7300.19
Arthritis mutilans—%1110.0054130.0085.913.80.030
PCS.SF-36—(score±SD)43±1143±100.6341.8±1144±9.90.05642±1146±100.006
MCS.SF-36—(score±SD)45±1247±110.2245.8±1248.4±10.60.0646±1248±110.21
HAQ—(score±SD)0.43±0.480.66±0.580.0010.55±0.560.64±0.570.160.55±0.550.70±0.590.04
BRAF—(score±SD)14±4.515±50.1814±4.914.5±5.40.4214±514±60.79
DLQI—(score±SD)2.5±42.6±3.80.812.4±3.82.7±40.402.4±3.73±4.60.30
  • BMI, Body Mass Index; BRAF, Bristol Rheumatoid Arthritis Fatigue Numeric Rating Scale; DLQI, Dermatology Life Quality Index; DMARDs, disease-modifying antirheumatic drugs; HAQ, Health Assessment Questionnaire; MCS.SF-36, mental health factors of quality of life; PCS.SF-36, physical health factors of quality of life; PsA, psoriatic arthritis; PsO, psoriatic disease.