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Table 1

Baseline characteristics in 1986 of the IWHS by follow-up leukemia status

Cases (138)aNoncases (35,221)aP
Education, no. (%)    
 <High school 34 (24.6) 6,284 (17.9)  
 High school 51 (37.0) 14,739 (42.1)  
 >High school 53 (38.4) 13,992 (40.0) 0.11 
Marital Status, no. (%)    
 Current 101 (73.7) 26,996 (77.4)  
 Former 32 (23.4) 7,024 (20.1)  
 Never 4 (2.9) 859 (2.5) 0.72 
Residence, no. (%)    
 Nonfarm 132 (95.6) 33,547 (95.6)  
 Farm 6 (4.4) 1,536 (4.4) 0.99 
Blood transfusion, no. (%)    
 No 86 (63.2) 24,919 (71.4)  
 Yes 43 (31.6) 8,875 (25.4)  
 Not sure 7 (5.2) 1,080 (3.1) 0.08 
Cigarette smoking (%)    
 Current 26 (19.3) 5,156 (14.9)  
 Past 21 (15.6) 6,727 (19.4)  
 Never 88 (65.2) 22,731 (65.7) 0.91 
Mean total energy    
 Intake, kcal/day 1,862.0 1,798.3 0.27 
Alcohol consumption    
 Servings/wk 1.7 2.0 0.36 
BMI    
 Baseline, kg/m2 27.9 27.0 0.03 
Cases (138)aNoncases (35,221)aP
Education, no. (%)    
 <High school 34 (24.6) 6,284 (17.9)  
 High school 51 (37.0) 14,739 (42.1)  
 >High school 53 (38.4) 13,992 (40.0) 0.11 
Marital Status, no. (%)    
 Current 101 (73.7) 26,996 (77.4)  
 Former 32 (23.4) 7,024 (20.1)  
 Never 4 (2.9) 859 (2.5) 0.72 
Residence, no. (%)    
 Nonfarm 132 (95.6) 33,547 (95.6)  
 Farm 6 (4.4) 1,536 (4.4) 0.99 
Blood transfusion, no. (%)    
 No 86 (63.2) 24,919 (71.4)  
 Yes 43 (31.6) 8,875 (25.4)  
 Not sure 7 (5.2) 1,080 (3.1) 0.08 
Cigarette smoking (%)    
 Current 26 (19.3) 5,156 (14.9)  
 Past 21 (15.6) 6,727 (19.4)  
 Never 88 (65.2) 22,731 (65.7) 0.91 
Mean total energy    
 Intake, kcal/day 1,862.0 1,798.3 0.27 
Alcohol consumption    
 Servings/wk 1.7 2.0 0.36 
BMI    
 Baseline, kg/m2 27.9 27.0 0.03 
a

Participants with missing values for certain characteristics are excluded in the totals.

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