Accuracy of Provider-Documented Child Immunization Status at Hospital Presentation for Acute Respiratory Illness

Area of Science:

• Pediatrics
• Public Health
• Epidemiology

Background:

• Accurate documentation of child immunization status is crucial for public health initiatives.
• Assessing the reliability of provider documentation versus immunization information systems is vital for improving vaccination coverage.
• Children presenting with acute respiratory illnesses represent a key opportunity for healthcare providers to address immunization gaps.

Purpose of the Study:

• To evaluate the accuracy of healthcare provider documentation of child immunization status upon hospital presentation for acute respiratory illness.
• To determine the association between provider-documented up-to-date (UTD) immunization status and actual immunization receipt during and after hospitalization.

Main Methods:

• A retrospective cohort analysis was performed on children aged 16 years or younger admitted for respiratory illnesses.
• Provider-documented UTD status was compared against the Washington State Immunization Information System (WAIIS) as the gold standard.
• Sensitivity, specificity, positive predictive value, and logistic regression were used to analyze accuracy and associations.

Main Results:

• Provider documentation indicated 92% of children were UTD, while WAIIS records showed only 42% were UTD.
• Provider-documented UTD status demonstrated high sensitivity (98.4%) but low specificity (12.2%) and a positive predictive value of 44.6%.
• Only 20% of children due for vaccines received them during hospitalization, and 44% within 30 days post-discharge, with no significant association with provider-documented UTD status.

Conclusions:

• Provider documentation of UTD immunization status in children with respiratory illnesses is inaccurate and overestimates vaccination rates.
• The discrepancy between documented and actual immunization status represents a missed opportunity to administer vaccines during and after hospital stays.
• Improving the accuracy of immunization record-keeping and leveraging hospital encounters are essential for enhancing childhood vaccination coverage.