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Table 2 Age-group average incidence rates of two immunophenotypes in acute lymphoid leukemia in children from Mexico City (2006-2007)

From: Childhood acute leukemias are frequent in Mexico City: descriptive epidemiology

    

Age

Group

(years)

     

Immuno-phenotype

 

< 1 y

 

1-4 y

 

5-9 y

 

10-14 y

 

Total

 

in ALL

n

AAIR*

n

AAIR*

n

AAIR*

n

AAIR*

n

AAIR*

SAAIR*

T-Cell

0

0

13

12.0

8

6.0

3

2.1

24

5.9

6.3

Pre B

3

12.2

58

53.6

46

34.2

35

24.8

142

34.8

35.8

  1. AAIR: average annual incidence rate; SAAIR: standardized AAIR; ALL: acute lymphoid leukemia; Pre B: Precursor B cell. *Expressed per million children.