Table 2. Cases and incidence rates of hospital-onset MRSA infection by volume of hospital, at 29 acute care hospitals, Connecticut, USA, 2001–2010*.

Hospital volume†	No. cases‡	Annual average incidence rate (range)§
Total	2,563	13.6 (8.9–18.1)
High	1,494	15.5 (10.1–23.3)
Medium	797	12.1 (6.7–17.1)
Low	272	10.1 (5.9–15.3)

*MRSA, methicillin-resistant Staphylococcus aureus.
†High, >80,000 patient bed-days/year; medium, 40,000–79,999 patient bed-days/year; low, <40,000 patient bed-days/year.
‡Number of cases is <2,753 because data were excluded from 3 (N = 32) hospitals that either did not report MRSA and/or the number of patient bed-days for some years.
§Annual average number of cases per 100,000 patient bed-days.