[OP0219] EUROPEAN SCLERODERMA STUDY GROUP (ESCSG) ACTIVITY INDEX IS CORRELATED TO QUALITY OF LIFE MEASURES BOTH AT ADMISSION AND OVERTIME M. Iudici, G. Cuomo, G. Abignano, G. Valentini. Rheumatology Unit, Second University of Naples, Naples, Italy Objectives: EScSG activity index has been validated for construct validity [1]. Its discriminant validity awaits to be investigated. In order to address this aspect, we investigated the relationship between the activity index and Health Assessment Questionnaire-Disability Index, physical and mental component scores (PCS and MCS) of Short Form-36 (SF36). Methods: 140 SSc patients consecutively admitted at tertiary center were investigated for EScSG activity index, HAQ-DI and PCS and MCS of SF36 at enrolment and after 1 year. The change (Δ) for each of the all measures was calculated. Results: EScSG activity index was found to be correlated to HAQ-DI, PCS and MCS both at admission (Rho=0.49, p=0.0003; Rho= -0.40, p<0.0001; Rho= -0.29, p=0.001, respectively) and after 1 year (Rho=0,64, p<0,0001; Rho= -0.29, p=0.001; Rho=-0.18, p=0.046 respectively). Moreover, the change between the value of the activity index at 1 year and that at admission (Δ activity index) was significantly correlated to ΔHAQ-DI, ΔPCS, ΔMCS (Rho=0,43, p=0.002; Rho=0,56, p<0.0001; Rho=0.48, p=0.002, respectively). Conclusion: HAQ-DI and SF36 (PCS and MCS) are considered to be validated outcome measure in SSc. Our results further support the construct validity of EScSG activity index and are for the first time underline its discriminant validity. References: • Valentini G. et al. European Scleroderma Study Group to define disease activity criteria for systemic sclerosis. III. Assessment of the construct validity of the preliminary activity criteria. Ann Rheum Dis 2003. Disclosure of Interest: None declared Citation: Ann Rheum Dis 2010;69(Suppl3):128 Session: Abstract Session: Modern prespective in systemic sclerosis

Iudici, M.;CUOMO, Giovanna;Abignano, G.;Valentini, G.

2010