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Table 7 Diagnostic and prognostic characteristics of leukemia cases among Saudi regions (1999–2013)

From: The burden of leukemia in the Kingdom of Saudi Arabia: 15 years period (1999–2013)

Regions Central Eastern Madinah Southern Western    P value
Immunophenotyping No. % No. % No. % No. % No. % No. %  
B-cell 1,105 83.7 487 84.4 411 88.2 419 84.8 572 82.5 3008 84.3 0.297
T-cell 206 15.6 85 14.7 53 11.4 67 13.6 110 15.9 523 14.7  
Grade I -IV 4 0.3 2 0.3 1 0.2 2 0.4 2 0.3 12 0.3  
Killer cell 2 0.2 1 0.2 1 0.2 1 0.2 2 0.3 7 0.2  
Null cell 3 0.2 2 0.3 0 0.0 5 1.0 7 1.0 17 0.5  
Basis of Diagnosis
 Histology of primary 2,080 71.8 1,006 72.5 704 58.4 815 65.4 1,172 63.5 5805 67.3 0.001
 Death Certificate Only 36 1.2 30 2.2 74 6.1 38 3.0 47 2.5 228 2.6  
 Others 780 26.9 351 25.3 427 35.4 394 31.6 628 34.0 2594 30.1  
Causes of Death
 Cancer 873 30.0 372 26.4 359 29.0 355 28.3 504 27.1 2477 28.4 0.085
 Others 2,035 70.0 1,035 73.6 879 71.0 899 71.7 1,356 72.9 6235 71.6