. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Am J Med. 2010 May;123(5):468.e1–468.e7. doi: 10.1016/j.amjmed.2009.07.037

Table 3. Adjusted Odds Ratios (95% CI) of Having Airflow Obstruction at Year 20 Based on Participant Characteristics Measured at Year 0.

	Year 0
Age	0.90 (0.85-0.94)^‡
Gender – male (vs. female)	0.39 (0.27-0.58)^‡
Race – white (vs. Black)	0.99 (0.67-1.47)
BMI	0.84 (0.79-0.89)^‡
Exposure to second hand smoke (vs. no exposure)	0.92 (0.38-2.23)
Past smoker (vs. never smoker)	1.12 (0.65-1.93)
Current smoker (vs. never smoker)	1.89 (1.27-2.81)^*
Education > high school (vs. ≤ high school)	0.59 (0.40-0.86)^*
FEV₁ % predicted (Y0)	0.93 (0.92-0.95)^‡ ^a
FVC % predicted (Y0)	1.03 (1.01-1.04)^† ^a
FEV₁/FVC (Y0)	0.74 (0.71-0.77)^‡

Number of participants studied = 2496

All results from logistic regression analysis

ORs are adjusted for age, gender, race, BMI, exposure to second hand smoke, smoking status, education and FEV₁/FVC

Adjusted for all variables listed above except FEV₁/FVC

p < 0.01

^†

p < 0.001

^‡

p < 0.0001