Table 2.

Risk factors for antimicrobial resistance in hospitalized patients from whom enterococci were isolated

CharacteristicNo. (%) of patients with:Pf
Ampicillin-resistant enterococciHLGRaenterococciAminoglycoside- and ampicillin-susceptible enterococcib
Total patients9c 10d 68e
Male/female3/64/633/35NS
Prior hospitalization8 (89)9 (90)15 (22)<0.001
Prior surgery1 (11)2 (20)5 (7)NS
Prior antibiotics6 (67)3 (30)24 (36)0.03
Underlying diseases7 (78)10 (100)60 (89)NS
Fast food >3×/week0 (0)0 (0)3 (4)NS
Dental procedure1 (11)2 (20)21 (31)NS
Prior nursing home0 (0)1 (10)1 (2)NS
Travel2 (22)2 (20)29 (42)NS
  • a HLGR, high-level-gentamicin-resistant.

  • b Gentamicin and streptomycin MIC, <2,000 μg/ml; ampicillin MIC, <16 μg/ml.

  • c Includes six E. faecium, twoE. faecalis, and one E. gallinarum isolates.

  • d All E. faecalis isolates.

  • e Includes 48 E. faecalis isolates and 20 E. faecium isolates.

  • f All variables were not significant (NS) in multivariate analysis.