Clinical trial of standing-orders strategies to increase the inpatient influenza vaccination rate.

We compared strategies to increase the rate of influenza vaccination. A written standing-orders policy that enabled nurses to vaccinate patients was compared with augmentation of the standing-orders policy with either electronic opt-out orders for physicians or electronic reminders to nurses. Use of opt-out orders yielded the highest vaccination rate (12% of patients), followed by use of nursing reminders (6%); use of the standing-orders policy alone was ineffective.