Table 3 Likelihood ratios of clinical and laboratory parameters of blood culture-positive EF (n = 53) versus blood culture negative for EF (n = 296) (July 2000–June 2005)

Abdominal pain

0.89

0.17

0.29

0.81

1.08 (0.99–1.18)

0.59 (0.31–1.13)

Epigastric pain

0.03

0.92

0.71

0.14

0.44 (0.14–1.37)

1.04 (0.96–1.13)

Anorexia

0.82

0.15

0.06

0.92

0.97 (0.80–1.17)

1.15 (0.45–2.92)

Vomiting

0.54

0.22

0.79

0.08

0.68 (10.58–0.83)

2.02 (1.21–3.38)

Diarrhea

0. 86

0.15

1.92

0.83

1.02 (0.91–1.13)

0.87 (0.45–1.70)

Chills

0.86

0.15

0.20

0.73

1.01 (0.92–1.12)

0.89 (0.50–1.57)

Cough

0.20

0.86

0.89

0.16

1.56 (0.75–3.22)

0.91(0.81–1.03)

Headache

0.89

0.15

0.11

0.92

1.06 (0.94–1.19)

0.66 (0..25–1.74)

Past history of EF

0.77

0.14

0.04

0.92

0.91 (0.71–1.17)

1.50 (0.60–3.69)

Dehydration

0.33

0.54

0.80

0.12

0.73 (0.52–1.02)

1.22 (0.94–1.58)

Anemia

0.21

0.86

0.9

0.16

1.61 (0.78–3.32)

0.90 (0.80–1.02)

Palpable lymph nodes

0.05

0.94

0.83

0.15

0.89 (0.26–2.98)

1.00(0.93–1.08)

Leukopenia

0.31

0.77

0.88

0.17

1.36 (0.80–2.30)

0.89(0.76–1.05)

Neutropenia

0.31

0.77

0.88

0.16

1.37 (0.81–2.32)

0.89 (0.75–1.05)

Thrombocytopenia

0.42

0.59

0.85

0.15

1.05 (0.74–1.51)

0.95 (0.75–1.22)