American Association for Cancer Research

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Table 1

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

	Cases (138)^a	Noncases (35,221)^a	P
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)^a	Noncases (35,221)^a	P
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.