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. 2018 Apr 2;18:429. doi: 10.1186/s12889-018-5263-6

Table 2.

Demographic characteristics of the eligible population from the National Health and Nutrition Examination Survey (1999–2004)

Weighted Proportiona
Age category (years)
 40–49 40.6 (38.5–42.8)
 50–64 38.7 (36.8–39.9)
 65 and older 20.7 (19.5–21.9)
Sex
 Male 47.6 (46.1–49.0
 Female 52.4 (50.9–53.9)
Race/Ethnicity
 Non-Hispanic White 76.9 (73.4–80.0)
 Non-Hispanic Black 9.3 (7.5–11.4)
 Other 13.9 (10.9–17.3)
Education
 Less than High School Education/no GED (General Education Diploma) 18.3 (16.6–20.0)
 High School Education/GED or more 81.7 (79.9–83.4)
Smoking
 No 47.6 (45.7–49.5)
 Yes (smoked at least 100 cigarettes in life) 52.3 (50.4–54.2)

aWeighted proportion of the eligible population (n = 6091) after applying sampling weights to the study sample (% (95% CI))