896Longitudinal Trends in Infection Rates in US Nursing Homes, 2006 - 2011

Differences in prevalence were evaluated using Student’s t-tests and a significance level of 0.05 CONCLUSIONS Infection items found on both MDS 2.0 and 3.0 included UTI, pneumonia, MDRO, wound infection, viral hepatitis, septicemia, and TB Items for C. difficile, conjunctivitis, HIV, respiratory infection (other than pneumonia), and sexually transmitted diseases were included on MDS 2.0 but not 3.0. Items for antibiotic use and isolation or quarantine were included on MDS 3.0 but not 2.0 Infection diagnosis items had two look-back periods in MDS 3.0 (60-day disease identification period and a shorter diagnosis status period) but only one in MDS 2.0 (the shorter diagnosis status period) MDS data from 24 quarters and over 14,000 NHs (n=25,903,977 assessments) were used to calculate infection prevalence UTI and pneumonia were the most common infections for all time periods Between 2006 – 2010, there were significant increases in the prevalence of all infection types except TB (p-values <0.01) MDS 3.0 implementation significantly impacted the prevalence of all infection types (p-values <0.01)