Table 1 Number of samples tested (total and proportion positive), and rate of Clostridium difficile infection (CDI) episodes per 10,000 patient-days by hospital

1 ^*

70

433

1.44

2 ^‡

69

411

1.01

3 ^†

77

813

0.39

4 ^*

138

1924

1.67

5 ^†

48

1370

1.62

Overall

402

4951

0.87