Figure 2: Association of occupational lifetime noise exposure with prevalent chronic obstructive pulmonary disease (COPD). The scale of the graph is logarithmic. Models are based on weighted logistic regression to obtain nationally representative estimates. Models are adjusted for gender, age, race/ethnicity (white, black/African American, American Indian/Chinese/Filipino/Asian Indian, and multiple race/other), annual family income (<$35,000, $35,000–74,999, $75,000–99,999, and ≥$100,000), cigarette-smoking status (never smoker, former smoker, current some day smoker, and current every day smoker), smoking other tobacco products, alcohol-drinking status (lifetime abstainer, former drinker, and current drinker), light/moderate physical activity (never, unable to do it, <3 times/week, 4–7 times/week, and >7 times/week), vigorous physical activity (never, unable to do it, <3 times/week, 4–7 times/week, and >7 times/week), body mass index (<25.00 kg/m2, 25.00–29.99 kg/m2, and ≥30.00 kg/m2), asthma, and Standard Occupational Classification major occupation group. Data source: CDC/NCHS, National Health Interview Survey, 2014.