Table 1.

Main content categories used for coding images in patient resources about gout.

Content Category	Category Definition	Category Descriptors (Yes/No)
Clinical presentations of gout	What clinical presentations of gout are shown in the images	Shows subcutaneous tophus? Shows redness and/or swelling of a joint? Shows joint pain?
MSU crystals and/or urate	What information about MSU crystals and urate images convey	Shows MSU crystals and/or urate? Shows that MSU crystals can be dissolved (e.g., “before and after” treatment comparisons)? Links MSU crystals and urate (e.g., MSU crystals and urate are present in the image)? Shows target serum urate either numerically or graphically? Shows causes of high serum urate (e.g., depiction of kidneys and high urate in 1 image)? Shows how to test for serum urate?
Medications	How images depict medicines and their purpose	Shows medicines? Conveys information about the purpose of medication (i.e., ULT and urate/MSU crystals are shown in 1 image)? Depicts side effects of medicines?
Dietary and lifestyle factors	What information images convey about diet and lifestyle	Shows food/drinks? Is it clear from the image and captions if the depicted food/drink should be avoided or consumed by people with gout? Shows a healthy lifestyle? Promotes physical activity and/or exercise?
Other advice for people with gout	Advice not related to pharmacological treatment, healthy lifestyle, or dietary modification	Conveys information about foot care? Contains footwear recommendations for people with gout?