Table 3

 Factors influencing the ACR50 response: results are shown for univariate analysis

VariablesACR50 response No (%)Univariate analysis OR (95% CI)p Value
*Determined by radiological sacroiliitis; †results shown for response of patients with and without the variable listed.
SJC, swollen joint count; CRP, C reactive protein; ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire.
Age (years)0.99 (0.99 to 1.04)NS
Sex (female/male)19 (43)/13 (48)0.87 (0.34 to 2.3)NS
Disease duration (years)1.8 (0.8 to 4.1)NS
SJC1.01 (0.9 to 1.03)NS
Arthritis in:
    Main large joints (knee and/or hip)14 (30) v 18 (78)†8.23 (2.54 to 26.6)<0.001
    Knee joints12 (30) v 20 (61)†3.58 (1.36 to 9.49)0.009
    Hip joints4 (40) v 28 (48)†0.73 (0.19 to 2.89)NS
CRP (>10 mg/l)23 (52) v 7 (39)†1.72 (0.56 to 5.26)NS
ESR (⩾30 mm/1st h)19 (46) v 12 (48)†0.89 (0.39 to 2.90)NS
Axial involvement*12 (60) v 19 (43)†0.51 (0.17 to 1.50)NS
Erosive arthritis26 (53) v 6 (30)†2.6 (0.9 to 7.9)NS
HAQ (⩾2)4 (27) v 28 (53)†3.1 (0.87 to 10.9)0.05