Incidence rate

Managerial Epidemiology 396 Gilca and colleagues (2010) analyzed hospital discharge data from Jo through 2006, looking specifically for the incidence of CDI (code On) among patients admitted to 83 acute care hospitals in Quebec. The result in exhibit A. 1. to the fiscal year April 1-March 31 during each of the eight periods present EXHIBIT A. 1 630,000 Incidence of C. diff at Time 610,000 3,225 of Discharge, 3,388 1998-2006 590,000 3,370 570,000 3,802 8,272 550,000 4,317 8, 726 HOSPITAL ADMISSIONS 530,000 602,044 589,301 1577,217 510,000 559,961 544,434 556,789 551,208 490,000 470,000 4.623 450,000 468.18 1998-1999 1999-2000 2000-2001 2001-2002 2002-2003 2003-2004 2004-2005 2005-2 YEAR C. diff Cases Hospital Admissions Source: Data from Gilca et al. (2010). Questions 7. How would you calculate the incidence rate in terms of cases per discharge for each fiscal year? 8. What was the endemic incidence of C. diff in Quebec during the year period 1998-2001? 9. Would the rate of C. diff 2003-2004 qualify as an epidemic? H would we confirm this suspicion? 10. Why might the rate of C. diff decrease in 2005-2006?