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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Respir Med. 2015 May 16;109(7):851–859. doi: 10.1016/j.rmed.2015.05.006

Table 3. Age-adjusted prevalence and adjusted likelihood of having respiratory symptoms and respiratory conditions associated with level of body mass index among adults aged ≥18 years: South Carolina, 2012.

Body Mass Index (kg/m2) Age-adjusted prevalence Model 1 Model 2
% (95% CI) Adjusted prevalence ratio (95% CI) Adjusted prevalence ratio (95% CI)
Chronic Obstructive Pulmonary Disease (COPD)
 Underweight (<18.5) 13.1 ( 7.6-18.6) 1.55 (1.00-2.41) 1.49 (0.95-2.32)
 Normal weight (18.5-24.9) 6.7 ( 5.6- 7.8) 1.00 (referent) 1.00 (referent)
 Overweight (25.0-29.9) 5.7 ( 4.7- 6.7) 0.93 (0.73-1.18) 0.92 (0.73-1.17)
 Obese (30.0-39.9) 8.5 ( 7.2- 9.9) 1.30 (1.03-1.64) 1.29 (1.02-1.64)
 Morbidly obese (≥40.0) 15.4 (11.4-19.4) 2.25 (1.65-3.08) 2.22 (1.62-3.04)
Current Asthma
 Underweight (<18.5) 13.8 ( 6.2-21.3) 2.15 (1.22-3.81) 2.13 (1.21-3.76)
 Normal weight (18.5-24.9) 5.8 ( 4.6- 6.9) 1.00 (referent) 1.00 (referent)
 Overweight (25.0-29.9) 6.4 ( 5.3- 7.5) 1.18 (0.91-1.53) 1.17 (0.90-1.52)
 Obese (30.0-39.9) 11.8 ( 9.9-13.7) 1.99 (1.53-2.57) 1.98 (1.53-2.57)
 Morbidly obese (≥40.0) 18.8 (14.3-23.4) 2.86 (2.08-3.93) 2.84 (2.06-3.91)
Frequent productive cough
 Underweight (<18.5) 14.6 ( 8.5-20.7) 1.40 (0.91-2.13) 1.36 (0.88-2.08)
 Normal weight (18.5-24.9) 9.0 ( 7.7-10.4) 1.00 (referent) 1.00 (referent)
 Overweight (25.0-29.9) 8.9 ( 7.6-10.2) 1.04 (0.84-1.27) 1.03 (0.84-1.27)
 Obese (30.0-39.9) 9.2 ( 7.7-10.6) 1.05 (0.84-1.31) 1.04 (0.83-1.31)
 Morbidly obese (≥40.0) 13.4 ( 9.6-17.2) 1.54 (1.11-2.13) 1.52 (1.10-2.11)
Frequent shortness of breath (SOB)
 Underweight (<18.5) 6.9 ( 2.1-11.7) 1.48 (0.73-2.99) 1.39 (0.70-2.77)
 Normal weight (18.5-24.9) 3.6 ( 2.7- 4.5) 1.00 (referent) 1.00 (referent)
 Overweight (25.0-29.9) 2.7 ( 2.0- 3.4) 0.79 (0.55-1.14) 0.79 (0.55-1.13)
 Obese (30.0-39.9) 4.9 ( 3.9- 6.0) 1.20 (0.87-1.67) 1.20 (0.87-1.65)
 Morbidly obese (≥40.0) 10.2 ( 7.0-13.5) 2.20 (1.43-3.37) 2.13 (1.39-3.29)
Strongly agree that SOB affects physical activity
 Underweight (<18.5) 19.0 ( 9.6-28.5) 2.78 (1.65-4.67) 2.68 (1.57-4.57)
 Normal weight (18.5-24.9) 5.6 ( 4.4- 6.8) 1.00 (referent) 1.00 (referent)
 Overweight (25.0-29.9) 4.7 ( 3.9- 5.5) 0.85 (0.66-1.11) 0.85 (0.65-1.10)
 Obese (30.0-39.9) 9.0 ( 7.6-10.3) 1.38 (1.07-1.79) 1.38 (1.07-1.78)
 Morbidly obese (≥40.0) 13.7 (10.1-17.2) 1.91 (1.33-2.74) 1.87 (1.30-2.69)

Model 1: a multivariable logistic regression model that includes sex, age, race/ethnicity, education, smoking status, and any exercise as covariates in addition to body mass index;

Model 2: a multivariable logistic regression model that includes history of cancer (excluding skin cancer) in addition to covariates in model 1;