A major challenge with designing health questionnaires is making sure that questions are both clinically meaningful and are easy for users to answer. One example has to do with hip-to-waist ratio, which can be an important indicator of heart health. I’ve seen health risk assessments ask people their hip and waist measurements, but how many people know those measurements without checking? And how many people have a tape measure close at hand to take the measurement? Even using your clothing size as a proxy is likely to be inaccurate since so many brands use vanity sizing or are inconsistent with other brands (I learned in a recent closet clean-out that I have every size from XS to XL in my closet, and they fit me). Continue reading Case Study: Patagonia Makes Questions Easy To Answer →