Fig. 1.

Progression of order and order set design. We began with the original blood product orders and order sets, in which blood product orders were distributed across three main order sets (see Supplementary Figs. S1 A–C and S2 A and B , available in the online version). In design by expert committee (DEC), we condensed these into a single order set and made minor adjustments in the “prepare” and “transfuse” orders (see Supplementary Fig. S1 D , available in the online version). In user-centered design (UCD), we condensed the order set even further into fewer sections and made major changes to both the order set structure and the “prepare” and “transfuse” orders (see Supplementary Figs. S1 E and F and S2C and D , available in the online version). OR, operating room.