The loss of health status in rheumatoid arthritis and the effect of biologic therapy: a longitudinal observational study

[21] Pavelka K(2005)US valuation of the EQ-5D health states: development and testing of the D1 valuation model Med Care 43 203-220

[22] Van Vollenhoven R(2005)Valuations of EQ-5D health states: are the United States and United Kingdom different? Med Care 43 221-228

[23] Sharp J(1980)Measurement of patient outcome in arthritis Arthritis Rheum 23 137-145

[24] Perez JL(2010)Chronic conditions and health problems in rheumatic diseases: comparisons with RA, non-inflammatory rheumatic disorders, systemic lupus erythematosus and fibromyalgia J Rheumatol 37 305-315

[25] Spencer-Green GT(2003)Direct medical costs and their predictors in patients with rheumatoid arthritis: a three-year study of 7,527 patients Arthritis Rheum 48 2750-2762

[26] Putte LB van de(1988)The MOS short-form general health survey Med Care 26 724-735

[27] Atkins C(1991)EuroQol: health-related quality of life measurement. Valuations of health states by the general public in Norway Health Policy 18 25-36

[28] Malaise M(2004)Multiple imputation of missing values Stata Journal 4 227-241

[29] Sany J(1989)A concordance correlation coefficient to evaluate reproducibility Biometrics 45 255-268

[30] Russell AS(2005)A comparison of generic, indirect utility measures (the HUI2, HUI3, SF-6D, and the EQ-5D) and disease-specific instruments (the RAQoL and the HAQ) in rheumatoid arthritis Soc Sci Med 60 1571-1582

[21] Pavelka K(2005)US valuation of the EQ-5D health states: development and testing of the D1 valuation model Med Care 43 203-220

[22] Van Vollenhoven R(2005)Valuations of EQ-5D health states: are the United States and United Kingdom different? Med Care 43 221-228

[23] Sharp J(1980)Measurement of patient outcome in arthritis Arthritis Rheum 23 137-145

[24] Perez JL(2010)Chronic conditions and health problems in rheumatic diseases: comparisons with RA, non-inflammatory rheumatic disorders, systemic lupus erythematosus and fibromyalgia J Rheumatol 37 305-315

[25] Spencer-Green GT(2003)Direct medical costs and their predictors in patients with rheumatoid arthritis: a three-year study of 7,527 patients Arthritis Rheum 48 2750-2762

[26] Putte LB van de(1988)The MOS short-form general health survey Med Care 26 724-735

[27] Atkins C(1991)EuroQol: health-related quality of life measurement. Valuations of health states by the general public in Norway Health Policy 18 25-36

[28] Malaise M(2004)Multiple imputation of missing values Stata Journal 4 227-241

[29] Sany J(1989)A concordance correlation coefficient to evaluate reproducibility Biometrics 45 255-268

[30] Russell AS(2005)A comparison of generic, indirect utility measures (the HUI2, HUI3, SF-6D, and the EQ-5D) and disease-specific instruments (the RAQoL and the HAQ) in rheumatoid arthritis Soc Sci Med 60 1571-1582