Utilizing Group-Based Contingencies to Increase Hand Washing in a Large Human Service Setting

Area of Science:

• Behavioral science
• Infection control
• Public health

Background:

• Hand washing is critical for preventing contagious diseases but adherence is a persistent challenge.
• Existing interventions are often short-term, setting-specific, and lack long-term effectiveness data.
• A behavior analytic approach is needed to identify conditions promoting consistent hand hygiene.

Purpose of the Study:

• To determine the specific conditions that prompt hand washing among healthcare workers.
• To implement and evaluate a long-term monitoring system for hand hygiene.
• To assess the effectiveness of interventions in a non-acute inpatient setting.

Main Methods:

• A single-case repeated measures reversal design was employed.
• Two interventions were assessed for their impact on hand washing adherence.
• The study involved 170 direct care workers in a large, non-acute inpatient unit.

Main Results:

• A lottery-based intervention proved effective in increasing hand hygiene adherence.
• The positive effects of the lottery intervention were sustained for a 2-year period.
• This demonstrates a viable long-term strategy for improving staff hand hygiene.

Conclusions:

• Behavior analytic strategies, such as lotteries, can effectively improve long-term hand hygiene adherence.
• Sustained interventions are crucial for maintaining infection control standards in healthcare settings.
• This approach offers a scalable solution for enhancing public health in non-acute care environments.