Radiography as primary outcome in rheumatoid arthritis: acceptable sample sizes for trials with 3 months' follow up.
Bruynesteyn K, Landewé R, van der Linden S, van der Heijde D.
Bruynesteyn K, et al. Among authors: van der heijde d, van der linden s.
Ann Rheum Dis. 2004 Nov;63(11):1413-8. doi: 10.1136/ard.2003.014043. Epub 2004 Mar 22.
Ann Rheum Dis. 2004.
PMID: 15037445
Free PMC article.
They were scored with (chronological) and without (paired) knowledge of the sequence of the films according to the Sharp/van der Heijde method. Changes in joint damage were analysed on a group and an individual level for different subsets of patients. ...Acce …
They were scored with (chronological) and without (paired) knowledge of the sequence of the films according to the Sharp/van der …