OBJECTIVES: The aims were to determine the ability of the HandScan [assessing inflammation in hand and wrist joints using optical spectral transmission (OST)] to measure RA disease activity longitudinally, compared with DAS28, and to determine whether short-term (i.e. 1 month) changes in the OST score can predict treatment response at 3 or 6 months. METHODS: Participants visited the outpatient clinic before the start of (additional) RA medication and 1, 3 and 6 months thereafter. Disease activity was monitored at each visit with the HandScan and DAS28 in parallel. A mixed effects model with DAS28 as the outcome variable with a random intercept at patient level, visit month and DAS28 one visit earlier was used to evaluate whether changes in the OST score are related to changes in DAS28. Binary logistic regression was used to test the predictive value of short-term changes in the OST score together with the baseline OST score for achievement of treatment response (EULAR or ACR criteria). All models were adjusted for RA stage (early or established). RESULTS: In total, 64 RA patients were included. One unit change in OST score was found to be related to an average DAS28 change of 0.03 (95% CI: 0.01, 0.06, P = 0.03). When adding OST score as a variable in the longitudinal model, the ability of the model to estimate DAS28 (i.e. explained variance) increased by 2%, to 59%. Neither baseline OST score nor short-term change in OST score was predictive for treatment response at 3 or 6 months. CONCLUSION: A longitudinal association of OST score with DAS28 exists, although explained variance is low. The predictive ability of short-term changes in HandScan for treatment response is limited.
OBJECTIVES: The aims were to determine the ability of the HandScan [assessing inflammation in hand and wrist joints using optical spectral transmission (OST)] to measure RA disease activity longitudinally, compared with DAS28, and to determine whether short-term (i.e. 1 month) changes in the OST score can predict treatment response at 3 or 6 months. METHODS: Participants visited the outpatient clinic before the start of (additional) RA medication and 1, 3 and 6 months thereafter. Disease activity was monitored at each visit with the HandScan and DAS28 in parallel. A mixed effects model with DAS28 as the outcome variable with a random intercept at patient level, visit month and DAS28 one visit earlier was used to evaluate whether changes in the OST score are related to changes in DAS28. Binary logistic regression was used to test the predictive value of short-term changes in the OST score together with the baseline OST score for achievement of treatment response (EULAR or ACR criteria). All models were adjusted for RA stage (early or established). RESULTS: In total, 64 RA patients were included. One unit change in OST score was found to be related to an average DAS28 change of 0.03 (95% CI: 0.01, 0.06, P = 0.03). When adding OST score as a variable in the longitudinal model, the ability of the model to estimate DAS28 (i.e. explained variance) increased by 2%, to 59%. Neither baseline OST score nor short-term change in OST score was predictive for treatment response at 3 or 6 months. CONCLUSION: A longitudinal association of OST score with DAS28 exists, although explained variance is low. The predictive ability of short-term changes in HandScan for treatment response is limited.
Authors: Marije F Bakker; Johannes W G Jacobs; Paco M J Welsing; Suzanne M M Verstappen; Janneke Tekstra; Evelien Ton; Monique A W Geurts; Jacobine H van der Werf; Grietje A van Albada-Kuipers; Zalima N Jahangier-de Veen; Maaike J van der Veen; Catharina M Verhoef; Floris P J G Lafeber; Johannes W J Bijlsma Journal: Ann Intern Med Date: 2012-03-06 Impact factor: 25.391
Authors: J S Smolen; C Han; D M F M van der Heijde; P Emery; J M Bathon; E Keystone; R N Maini; J R Kalden; D Aletaha; D Baker; J Han; M Bala; E W St Clair Journal: Ann Rheum Dis Date: 2008-07-01 Impact factor: 19.103
Authors: Josef S Smolen; Robert B M Landewé; Johannes W J Bijlsma; Gerd R Burmester; Maxime Dougados; Andreas Kerschbaumer; Iain B McInnes; Alexandre Sepriano; Ronald F van Vollenhoven; Maarten de Wit; Daniel Aletaha; Martin Aringer; John Askling; Alejandro Balsa; Maarten Boers; Alfons A den Broeder; Maya H Buch; Frank Buttgereit; Roberto Caporali; Mario Humberto Cardiel; Diederik De Cock; Catalin Codreanu; Maurizio Cutolo; Christopher John Edwards; Yvonne van Eijk-Hustings; Paul Emery; Axel Finckh; Laure Gossec; Jacques-Eric Gottenberg; Merete Lund Hetland; Tom W J Huizinga; Marios Koloumas; Zhanguo Li; Xavier Mariette; Ulf Müller-Ladner; Eduardo F Mysler; Jose A P da Silva; Gyula Poór; Janet E Pope; Andrea Rubbert-Roth; Adeline Ruyssen-Witrand; Kenneth G Saag; Anja Strangfeld; Tsutomu Takeuchi; Marieke Voshaar; René Westhovens; Désirée van der Heijde Journal: Ann Rheum Dis Date: 2020-01-22 Impact factor: 19.103
Authors: David T Felson; Josef S Smolen; George Wells; Bin Zhang; Lilian H D van Tuyl; Julia Funovits; Daniel Aletaha; Cornelia F Allaart; Joan Bathon; Stefano Bombardieri; Peter Brooks; Andrew Brown; Marco Matucci-Cerinic; Hyon Choi; Bernard Combe; Maarten de Wit; Maxime Dougados; Paul Emery; Daniel Furst; Juan Gomez-Reino; Gillian Hawker; Edward Keystone; Dinesh Khanna; John Kirwan; Tore K Kvien; Robert Landewé; Joachim Listing; Kaleb Michaud; Emilio Martin-Mola; Pamela Montie; Theodore Pincus; Pamela Richards; Jeffrey N Siegel; Lee S Simon; Tuulikki Sokka; Vibeke Strand; Peter Tugwell; Alan Tyndall; Desirée van der Heijde; Suzan Verstappen; Barbara White; Frederick Wolfe; Angela Zink; Maarten Boers Journal: Arthritis Rheum Date: 2011-03
Authors: N J Besselink; A A A Westgeest; R Klaasen; M Gamala; J M van Woerkom; J Tekstra; M M A Verhoeven; W E Van Spil; F P J G Lafeber; A C A Marijnissen; J M Van Laar; J W G Jacobs Journal: Trials Date: 2019-04-17 Impact factor: 2.279
Authors: M van Onna; D F Ten Cate; K L Tsoi; A J L Meier; J W G Jacobs; A A A Westgeest; P B L Meijer; M C van Beek; W H J Rensen; J W J Bijlsma Journal: Ann Rheum Dis Date: 2015-10-09 Impact factor: 19.103