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Table 1 Frequency distributions of selected variables between the acute lymphoblastic leukemia cases and controls

From: Association between genetic polymorphism of XRCC7 (G6721T) and risk of acute lymphoblastic leukemia

VariablesCases (n = 99)Controls (n = 200)OR (95% CI)P value*
 n (%)n (%)  
Gender
 Male63 (63.6)104 (52)1.00 
 Female36 (36.4)96 (48)1.1 (0.21–0.75)0.098
Parents’ smoking habit
 No51 (51.5)120 (64.2)1.00 
 Yes48 (48.5)67 (35.8)1.77 (1.68–2.94)0.027
Family cancer history**
 No26 (57.8)149 (78)1.00 
 Yes19 (42.2)42 (22)2.608 (1.31–5.38)0.006
  1. *P associated with either Student’s t test or chi-square test and Fisher’s exact test
  2. **Family history of acute lymphoblastic leukemia in the first-degree relatives