Fig. 1

Overview of Study. Legend: KnowledgePanel = a nationally representative probability-based online survey panel from which we will gather data from a representative sample of chronic pain patients; MTurk = Amazon’s Mechanical Turk, an crowdsourcing platform through which we will gather data from a convenience sample of chronic pain patients; PROMIS-29 = 29-item Patient-Reported Outcomes Measurement Information System; RTF = National Institutes of Health Pain Consortium’s Research Task Force on Chronic Low Back Pain. Aims 1 and 2 use data from three sources for their preliminary, intermediate and final analyses. The first source is made up of available existing data and the last two sources will involve primary data collection. Aim 3 involves additional analyses to establish the usefulness of MTurk as a platform for data collection