Table 4 Comparison of medical record audits and administrative data, composite score for mammography, Pap smears and influenza vaccinations
From: Measuring data reliability for preventive services in electronic medical records
Year | Patients receiving service, medical record audits, n/N, % (95% CI)* | Patients receiving service, administrative data, n/N, % (95% CI) | Difference between medical record audits and administrative data within year (95% CI) | Difference in the change from previous year (95% CI) |
|---|---|---|---|---|
2004 | 2264/2807,80.7%(79.2%–82.1%) | 11074/14096,78.6%(77.9%–79.2%) | +2.1% (0.5%–3.7%) |  |
2005 (post pay-for- performance) | 2385/2809,84.9%(83.6%–86.2%) | 11735/14927,78.6%(78.0%–79.3%) | +6.3% (4.8%–7.8%) | 4.2% greater increase with chart audits (2.0%–6.4%) |
2006 (first year after EMR introduction) | 1995/2696,74.1%(72.4%–75.7%) | 11692/15291,76.5%(75.8%–77.1%) | −2.4% (−4.2%– −0.6%) | 8.7% greater decrease with chart audits (−11.0%– − 6.4%) |
2007 (second year after EMR introduction) | 2076/2703,77.2%(75.6%–78.8%) | 12005/15559,77.2%(76.5%–77.8%) | 0 (−1.7%–1.8%) | 2.4% greater increase with chart audits(0%–4.9%) |