Prognostic Factors in Childhood Acute Lymphoblastic Leukaemia
Author Information
Author(s): Donadieu J, Auclerc M-F, Baruchel A, Perel Y, Bordigoni P, Landman-Parker J, Leblanc T, Cornu G, Sommelet D, Leverger G, Schaison G, Hill C
Primary Institution: Institut Gustave Roussy
Hypothesis
The study aims to analyze variations in the relative risk of relapse or death as a function of continuous prognostic variables in childhood acute lymphoblastic leukaemia.
Conclusion
The study found that different continuous prognostic variables significantly affect the risk of relapse or death in children with acute lymphoblastic leukaemia.
Supporting Evidence
- The risk associated with white blood cell count values in the upper quintile was 1.9 times higher than that in the lower quintile.
- The risk in the upper quintile of haemoglobin level was 1.3 times higher than that in the lower quintile.
- The risk in the lower quintile of platelet count was 1.2 times higher than that in the upper quintile.
- Children under 1 year of age had a risk 2.6 times higher than those between 3 and 4.3 years of age.
Takeaway
This study looked at how different health measurements can help predict if kids with a type of blood cancer will get better or worse.
Methodology
The study analyzed a population of 1545 children with ALL and estimated the risk of relapse or death associated with different values of continuous prognostic variables by dividing the sample into quintiles.
Potential Biases
The study discusses the potential bias known as the 'Will Rogers phenomenon' due to arbitrary categorization of continuous variables.
Limitations
The study acknowledges that the selection of cutpoints for continuous variables is arbitrary and may lead to a loss of information.
Participant Demographics
The study involved children diagnosed with acute lymphoblastic leukaemia, with a small subgroup under 1 year of age.
Digital Object Identifier (DOI)
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