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Survey of healthcare-associated infection rates in a nursing home resident population

In this study we assessed the incidence and types of healthcare-associated infection (HCAI) in a nursing home resident population. The influences of home size, resident category, gender and age were also examined. Fifteen homes were recruited and infection rates recorded from 1 October 2006 to 2 December 2006. A rate of 6.04 infections/1000 bed days was recorded for the complete study. Infection rates for the four main categories of infection (number of infections/ 1000 bed days) were respiratory (2.52), urinary (1.87), skin and soft tissue (1.57) and gastrointestinal (0.41). Infection rates for small, medium and large homes were 4.64 (range 1.95—6.51), 5.9 (range 0.49—10.76) and 7.79 (range 5.79—9.39), respectively; however, statistical significance was not achieved (p = 0.335). Results indicate that respiratory infection rates are higher in larger homes (4.08) than in small (1.88) or medium size homes (2.22). Urinary infection rates were similar in small (1.89), medium (1.88) and large (1.82) homes and skin and soft tissue infections were lower in small homes (0.87) but similar in medium (1.69) and large (1.90) homes. We found a statistically significant relationship between the type of infection acquired and both resident category (p = 0.017) and gender (p = 0.005); the relationship between type of infection and age did not reach statistical significance (p = 0.346).