Table 3 Univariate analysis of biological, socioeconomic, and nutritional variables as predictors for TRM stratified by diagnosis

From: Incidence and predictors of treatment-related mortality in paediatric acute leukaemia in El Salvador

 

ALL

AML

 

HR

(95% CI)

P -value

HR

(95% CI)

P -value

Biological variables

 Age (years)

0.93

(0.85, 1.02)

0.13

0.99

(0.89, 1.11)

0.90

 DNA index

0.57

(0.20, 1.63)

0.29

   

 B-precursor immunophenotype

0.53

(0.26, 1.09)

0.08

   

 High-risk group

0.86

(0.50, 1.49)

0.60

   

 FAB class (M5 vs other)

   

1.95

(0.57, 6.66)

0.29

 Initial WBC (per 10 × 109/l)

1.00

(1.00, 1.00)

0.05

1.00

(1.00, 1.00)

0.31

 Initial haemoglobin (g l−1)

0.98

(0.91, 1.07)

0.70

1.01

(0.87, 1.17)

0.88

Socioeconomic variables

 Hours to clinic

0.97

(0.84, 1.11)

0.61

1.01

(0.73, 1.39)

0.96

 Cost to travel to clinic

1.02

(0.93, 1.11)

0.72

1.08

(0.79, 1.50)

0.62

 Income (per $100)

0.81

(0.66, 0.99)

0.04

1.04

(0.89, 1.22)

0.61

 Presence of telephone

0.75

(0.41, 1.36)

0.34

1.04

(0.41, 2.68)

0.93

 Number of family members

0.94

(0.80, 1.09)

0.39

0.98

(0.81, 1.18)

0.82

 Parental education category

0.46

(0.23, 0.89)

0.02

0.94

(0.36, 2.42)

0.89

Nutritional variables

 Body mass index percentile

1.00

(0.99, 1.02)

0.42

1.00

(0.99, 1.02)

0.87

 Triceps skin-fold thickness percentile

1.00

(0.98, 1.02)

0.86

1.02

(0.98, 1.06)

0.29

 Mid-upper arm circumference percentile

1.01

(0.99, 1.03)

0.38

1.03

(1.00, 1.06)

0.06

  1. Abbreviations: ALL=acute lymphoblastic leukaemia; AML=acute myeloid leukaemia; BMI=body mass index; CI=confidence interval; HR=hazard ratio; TRM=treatment-related mortality; WBC=white blood cell count.