Table 6.

Exposures associated to hairy cell leukemia risk in the final model*

	OR (95% CI)	P
Lifetime cigarette exposure
Nonsmoker†	1.00 (referent)	.001
1–10 pack-years	0.69 (0.43–1.09)
11–20 pack-years	0.56 (0.34–0.95)
21–35 pack-years	0.48 (0.28–0.83)
>35 pack-years	0.29 (0.14–0.58)
Ever lived or worked on a farm
No	1.00 (referent)	.043
Yes	1.70 (1.02–2.82)
Height‡
Quartile 1 (low)	1.00 (referent)	.016
Quartile 2	1.60 (0.82–3.12)
Quartile 3	2.40 (1.23–4.70)
Quartile 4 (high)	2.59 (1.32–5.07)

* Adjusted for age, sex, race and/or ethnicity, study, and SES. CI = confidence interval; OR = odds ratio; SES = socioeconomic status.

† Smoked less than 6 mo or less than 100 cigarettes in lifetime.

‡ Height cut points for males (Q1-2: 172; Q2-3: 177.8; Q3-4: 182) and for females (Q1-2: 159; Q2-3: 163; Q3-4: 168).