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Table 2 Age- and sex-adjusted relative risks for leukemia among subjects with allergic conditions.

From: Allergic conditions and risk of hematological malignancies in adults: a cohort study

 

Leukemia

Leukemia, excluding

CLL

Exposure

N e

N o

RR

95% CI

N e

N o

RR

95% CI

N e

N o

RR

95% CI

Asthma, hay fever or hives

31

94

1.4

(0.9–2.1)

21

43

2.0

(1.2–3.4)

10

51

0.8

(0.4–1.6)

Hay fever

21

105

1.1

(0.7–1.8)

14

50

1.5

(0.8–2.8)

7

55

0.7

(0.3–1.6)

Asthma

7

126

1.6

(0.8–3.5)

3

64

1.3

(0.4–4.2)

4

62

1.9

(0.7–5.3)

Hives

7

120

2.1

(1.0–4.5)

6

58

3.6

(1.6–8.5)

1

62

0.6

(0.1–4.3)

Eczema*

8

115

0.9

(0.5–1.9)

3

59

0.7

(0.2–2.2)

5

56

1.2

(0.5–3.1)

Allergic conditions**

30

87

1.1

(0.8–1.7)

18

42

1.4

(0.8–2.4)

12

45

0.9

(0.5–1.7)

  1. Ne = No. of exposed cases, No = No. of unexposed cases.
  2. * At least one positive answer for eczema during childhood or allergic eczema.
  3. ** At least one positive answer for asthma, hay fever, eczema during childhood or allergic eczema.