Table 4 Risk factors associated with attributable mortality in patients with complicated pyelonephritis

Age > 75 years

1.05 (1.01-1.19)

2.77 (1.35-5.68)

Long-term bladder catheterization

1.97 (0.94-4.14)

Immunosuppression

2.81 (1.56-5.05)

3.14 (1.47-6.70)

Chronic kidney failure

2.37 (1.16-4.85)

Absence of fever

1.05 (1.01-1.07)

Absence of costovertebral tenderness

1.04 (1.02-1.70)

Systolic blood pressure <90 mm Hg

3.90 (2.24-6.80)

Leukocytosis > 20.000 cell/ml

1.03 (1.00-1.06)

Thrombocytopoenia

2.72 (1.46-5.05)

Serum creatinine > 2 mg /dL

1.10 (1.05-1.15)

Ectasia ≥ grade II

1.99 (0.99-3.99)

Bacteraemia

2.32 (1.20-4.48)

Acute kidney failure

7.56 (4.01-14.30)

Severe sepsis

17.33, (8.37-35.89)

Septic shock

54.5 (25.9-114.5)

58.5 (26.6-128.5)