Gender

Female

1.00

Male

1.14 (0.58-2.23)

P = 0.71

Age

1.07 (1.01-1.31)

P = 0.027

Family Hx of Atopy

0.76 (0.37-1.58)

P = 0.46

Model 1 (n = 61)

1.07 (0.31-3.66)

P = 0.92

1.19 (0.32-4.50)

P = 0.79

Passive Smoking

Model 2 (n = 152)

P = 0.043

Current or Former Smoker

2.10 (1.03-4.31)

1.93 (0.93-4.01)

P = 0.08

Model 3 (n = 125)

Packs per Year

   Never Smoker 0

1.00

1.00

   1-10 packs 1

1.31 (0.43-4.03)

P = 0.63

1.47 (0.46-4.68)

P = 0.52

   11-20 packs 2

3.51 (1.39-8.83)

P = 0.008

2.85 (1.09-7.46)

P = 0.032

   >20 packs 3

7.67 (2.09-28.07)

P = 0.002

5.59 (1.44-21.67)

P = 0.013

Model 4 (n = 142)

Smoking Status

   Never Smoker 0

1.00

1.00

   Former Smoker 1

1.28 (0.39-4.22)

P = 0.69

1.26 (0.37-4.24)

P = 0.79

   Current Smoker 2

3.07 (1.43-6.57)

P = 0.004

2.78 (1.28-6.08)

P = 0.009