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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: J Rheumatol. 2019 Feb 15;46(10):1374–1378. doi: 10.3899/jrheum.181074

Figure 1.

Figure 1

Stiffness in Rheumatic Diseases study design

Step 1 designates the qualitative analysis step that led to determining the stiffness domain content specifically in RA and two draft instruments for their use. Step 2 illustrates qualitative studies existing in other diseases which we will use to define stiffness content in other rheumatic diseases, followed by a patient Delphi. We will then develop disease specific items and together with the existing RA stiffness items we will create a stiffness item bank. Short forms from this item bank can then be individually assessed through OFISA.