Standing Orders Boost Vaccine Uptake In Systematic Review

Key Takeaways

• Across clinical settings, standing orders were generally associated with higher vaccine uptake in studies that evaluated them.
• Seasonal influenza and pneumococcal vaccination were the most represented outcomes, and their results moved in a similar direction.
• In multicomponent studies, standing orders were usually paired with provider-focused approaches and less often with system-level strategies, while research gaps were also noted.

A systematic review found that standing orders were associated with higher vaccine coverage in clinical settings, with a median 13 percentage-point increase in standing orders-only studies with comparison groups. The search yielded 56 eligible studies overall, and 22 specifically evaluated standing orders used without other intervention components. Seasonal influenza and pneumococcal vaccination outcomes accounted for the largest disease-specific groups in the review.

The review evaluated the impact of standing orders on vaccine coverage in clinical settings, examining interventions used either alone or alongside other approaches. For the quantitative synthesis, effect sizes were extracted from standing orders-only studies with comparison groups rather than from multicomponent reports. Eight standing orders-only studies had a comparison group, including 1 randomized trial, and 5 were judged at low risk of bias. Multicomponent studies were retained for descriptive context, but the primary effect-size summary was based on that comparison subset.

Within the comparison-based standing orders-only studies, vaccine uptake increased by a median of 13 percentage points, with an interquartile range of 2 to 20 percentage points. Seasonal influenza vaccination, assessed in 7 of those studies, showed a median 12 percentage-point increase, with an interquartile range of 6 to 24. Pneumococcal vaccines, assessed in 5 of those studies, showed a median 14 percentage-point increase, with an interquartile range of 2 to 20. Those two outcomes were the most studied, and their results pointed in the same general direction.

When standing orders appeared within multicomponent interventions, they were paired most often with provider-directed components across 34% to 63% of studies. Patient-directed components appeared in 20% to 49% of studies, while system-directed components were least common at 3% to 14%. The abstract did not separate outcomes by these pairings, so the percentages reflect intervention mix rather than differential performance. These figures describe how intervention elements were combined across studies rather than ranking any single configuration.

The authors interpreted standing orders as showing one of the largest effects among interventions intended to increase vaccine uptake. They also highlighted future research priorities in randomized trials, childhood vaccination, and behavioral aspects of implementation in healthcare systems.