Table 2.

Frequencies of amoxicillin-clavulanate (AMC)-resistantE. coli isolates by wards

WardNo. (%) of AMC-resistant E. coliisolates
199619971998
Intensive-care units8 (6.0)7 (6.5)8 (6.7)
Surgery24 (9.0)13 (5.5)19 (7.8)b
Medicine27 (4.5)40 (7.0)a16 (2.8)a, b
Geriatrics9 (7.3)6 (5.0)10 (7.0)
  • a Significant decrease between the frequencies of AMC-resistant E. coli in 1998 and 1997 in medical wards (P = 0.008).

  • b Frequency of AMC-resistant E. coliwas significantly lower in medical wards than in surgical wards in 1998 (P = 0.001).