Accuracy and time requirements of a bar-code inventory system for controlled substances.

Area of Science:

• Pharmacy
• Health Informatics
• Supply Chain Management

Background:

• Controlled substances inventory management is critical in healthcare settings.
• Existing automated systems often rely on manual data entry, posing accuracy challenges.
• Traditional keyboard entry for controlled substances can be time-consuming and error-prone.

Purpose of the Study:

• To evaluate the impact of a bar-code system on time requirements for data entry.
• To assess the effect of a bar-code system on data-entry accuracy in controlled substances inventory.
• To compare bar-code data entry with traditional keyboard entry in an existing automated system.

Main Methods:

• A bar-code data entry system was adapted for an existing automated controlled substances inventory.
• Four experienced technicians participated in a 32-day study.
• Technicians performed data entry using both keyboard and bar-code methods for eight days each.
• Data-entry time and accuracy were measured for both methods.

Main Results:

• Mean data-entry times for keyboard and bar-code methods were not significantly different.
• The bar-code method resulted in a significantly lower mean percentage error (0.79%) compared to the keyboard method (1.53%).
• Adaptation of bar-code entry to existing procedures did not substantially increase speed but enhanced accuracy.

Conclusions:

• Bar-code systems offer improved accuracy for controlled substances inventory data entry.
• While not faster, bar-code technology enhances reliability in existing automated inventory systems.
• The study highlights the benefits of bar-code integration for reducing errors in pharmaceutical inventory management.