Methods
A randomized controlled parallel group trial was embedded in a three-round online Delphi survey. After an “open” first round, primary care patients, trained patient partners, and primary care clinicians from seven primary care practices were allocated 1:1 to a rating or ranking assessment group for the remainder of the study by stratified permuted block randomization, with strata based on participants’ gender and status. Agreement on item prioritization between the experimental groups was measured by calculating Krippendorff’s alpha reliability coefficient on the aggregate rank order of items in each group after the final round. Self-reported ease or difficulty with the assessment task was measured with the Single Ease Question.