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Table 3 Predictors of the rates of microbiologically documented sterile site infection clinically documented infection and fever of unknown origin per course among intensive treatment courses (N = 101)

From: Infections in pediatric acute promyelocytic leukemia: from the canadian infections in acute myeloid leukemia research group

 

Microbiological sterile site

Clinically documented

Fever of unknown origin

 

Rate ratio

P value

Rate ratio

P value

Rate ratio

P value

 

(CI)

 

(CI)

 

(CI)

 

Child characteristics at diagnosis

    

Age in years

0.92

0.082

0.99

0.748

0.92

0.025

(0.84, 1.01)

 

(0.92, 1.06)

 

(0.85, 0.99)

 

Obese vs. non-obese1

0.92

0.891

0.60

0.268

0.40

0.103

(0.29, 2.93)

 

(0.24, 1.48)

 

(0.13, 1.20)

 

Treatment characteristics

     

APL-specific treatment protocol

0.77

0.643

2.63

0.127

0.69

0.496

(0.25, 2.37)

 

(0.76, 9.10)

 

(0.24, 2.01)

 

Registered on study

1.91

0.162

1.24

0.553

0.49

0.385

(0.77, 4.70)

 

(0.62, 2.48)

 

(0.10, 2.43)

 

Diagnosed prior to January 1, 2000

3.18

0.030

1.22

0.691

2.87

0.018

(1.12, 9.04)

 

(0.46, 3.18)

 

(1.20, 6.86)

 

Cumulative dose of cytarabine (g/m2)

1.09

0.008

0.97

0.522

0.99

0.763

(1.02, 1.16)

 

(0.88, 1.07)

 

(0.90, 1.08)

 

Course characteristics

     

Neutropenia (ANC <0.5 ×109) at start of course

0.99

0.990

5.68

<0.0001

1.36

0.436

(0.32, 3.06)

 

(2.42, 13.31)

 

(0.63, 2.93)

 

Greater than 15 days with neutropenia

2.04

0.208

4.18

0.001

2.01

0.138

(0.67, 6.21)

 

(1.81, 9.62)

 

(0.80, 5.07)

 

Days receiving corticosteroids

1.04

0.064

1.03

0.075

1.01

0.555

(1.00, 1.09)

 

(1.00, 1.07)

 

(0.97, 1.05)

 
  1. Abbreviations: APL acute promyelocytic leukemia, ANC absolute neutrophil count, CI confidence interval; 1 Obesity only available for children ≥ 2 years of age.