Table 2

Unadjusted characteristics of study population - NHANES, 2007–2010
Characteristic Na %b (95% CI)
Total 5139 100.0
Sex
  Men 2572 49.0 (47.8-50.1)
  Women 2567 51.0 (49.9-52.2)
Age category (years)
  40-49 1523 35.2 (32.9-37.6)
  50-59 1385 32.7 (30.8-34.6)
  60-69 1364 21.0 (19.6-22.4)
  70-79 867 11.1 (10.3-12.0)
Race/Ethnicity
  White (Non-Hispanic) 2566 75.4 (70.5-79.7)
  Black (Non-Hispanic) 963 9.7 (7.7-12.1)
  Mexican-American 872 6.2 (4.2-8.9)
  Other/Multiracial 738 8.8 (6.8-11.3)
Education (years)
  <12 1467 17.4 (15.3-19.7)
  12 1225 24.9 (22.7-27.3)
  >12 2447 57.7 (54.1-61.3)
Non-respiratory chronic illnessesc
  None 2164 45.3 (42.4-48.2)
  1-2 2395 45.3 (43.0-47.7)
  ≥3 580 9.4 (8.1-10.8)
BMI category
  Underweight/normal (<25.0 kg/m2) 1177 25.8 (23.6-28.2)
  Overweight (25.0-29.9 kg/m2) 1885 36.9 (34.6-39.2)
  Obese (≥30 kg/m2) 2077 37.3 (35.1-39.5)
Smoking status
  Current 1036 18.4 (16.5-20.6)
  Former 1563 30.3 (28.0-32.7)
  Never 2539 51.3 (48.8-53.8)
Lung function category
  Normal lung function 3698 72.9 (70.8-74.8)
  Restrictive impairment 438 7.2 (6.2-8.4)
  Mild obstruction 524 10.9 (9.4-12.6)
  Moderate–severe obstruction 479 9.0 (7.8-10.3)
Respiratory symptoms
  Frequent cough 521 10.4 (9.0-12.0)
  Frequent phlegm 445 7.8 (7.0-8.7)
  Past year wheeze 678 12.9 (11.4-14.5)
  Any symptoms 1087 21.0 (19.0-23.2)
  No symptoms 4052 79.0 (76.8-81.0)
  1 symptom 670 13.4 (11.9-15.2)
  2 symptoms 277 5.0 (4.3-5.9)
  3 symptoms 140 2.5 (2.0-3.2)
Health-related quality of life
  Fair/poor health 1248 16.3 (14.4-18.4)
  Frequent physical distressd 691 11.3 (9.7-13.1)
  Frequent mental distresse 627 11.6 (10.2-13.0)
  Frequent activity limitationf 322 5.3 (4.4-6.4)

a Unweighted n’s.

b Weighted percentage.

c Non-respiratory chronic diseases included diabetes, arthritis, gout, current anemia, heart failure, coronary heart disease, angina, myocardial infarction, stroke, thyroid disease, liver disease, and any cancer.

d Physical health not good ≥14 days during past 30 days.

e Mental health not good ≥14 days during past 30 days.

f Poor health limited usual activities ≥14 days during past 30 days.

Wheaton et al.

Wheaton et al. BMC Public Health 2013 13:854   doi:10.1186/1471-2458-13-854

Open Data