Fig. 3From: Impact of a structured referral algorithm on the ability to monitor adherence to appropriate use criteria for transthoracic echocardiographyPrevalence of classifiable TTE referrals using the free-form-text requisition (blue bars) and structured referral requisition algorithm (red bars) in the four AUC categories with the largest patient numbers. * p <0.001 for comparison of prevalences between the structured referral requisition algorithm and free-form-text requisitionBack to article page