Figure 2.3—Illustration shows the effects of smoking on pulmonary function in young boys and girls, ages 10- to 18-years old. Tables with data points are appended to this chapter.

Figure 2.3Gender-specific effects of smoking on level of pulmonary function in youth 10–18 years of age

Source: Gold et al. 1996. Reprinted with permission from the Massachusetts Medical Society, ©1996.

Note: Percentage differences and 95% confidence intervals are plotted for groups of boys and girls with differing levels of smoking as compared with those of identical age and log height who had never smoked, with adjustment for age, log height at each age, residence, parental education, and maternal smoking status. “Never” denotes never having smoked; “Former,” formerly having smoked; “Light,” 1/2–4 cigarettes/day; “Medium,” 5–14 cigarettes/day; and “Heavy,” ≥15 cigarettes/day. FEF25–75 = forced expiratory flow between 25% and 75% of FVC; FEV1 = forced expiratory volume in 1 second; and FVC = forced vital capacity.

Figure 2.3Appended Data Tables

Figure 2.3aGender-specific effects of smoking on level of pulmonary function in boys, 10–18 years of age

Percent Difference (95% Confidence Interval)
Smoking FrequencyFVCFEV1FEV1/FVCFEF25–75
Never0000
Former3.08 (142–4.52)2.18 (1.41–3.61)−0.92 (−1.85–0.94)−0.01 (−3.02–3.11)
Light1.47 (0.87–2.35)0.40 (−0.05–1.32)−1.05 (−1.57–0.52)−2.10 (−3.83–1.75)
Medium2.10 (0.96–3.07)0.90 (−0.14–1.94)−1.14 (−1.82–0.68)−2.25 (−4.41–2.20)
Heavy2.11 (1.50–3.63)−0.03 (−1.59–1.58)−2.06 (−3.13–1.08)−3.16 (−5.81–2.72)

Figure 2.3bGender-specific effects of smoking on level of pulmonary function in girls, 10–18 years of age

Percent Difference (95% Confidence Interval)
Smoking FrequencyFVCFEV1FEV1/FVCFEF25–75
Never0000
Former0.52 (−1.17–2.24)0.11 (−1.42–1.66)−0.45 (−1.35–0.90)−0.38 (−3.23–2.93)
Light1.84 (0.87–2.72)0.98 (0.10–1.87)−0.86 (−1.35–0.49)−0.43 (−2.03–1.61)
Medium1.89 (0.75–3.04)0.10 (−1.04–1.26)−1.52 (−2.12–0.61)−2.25 (−4.41–2.20)
Heavy1.41 (0.04–2.80)−2.06 (−3.13–1.08)−1.88 (−2.68–0.81)−3.16 (−5.81–2.72)

From: 2, The Health Consequences of Tobacco Use Among Young People

Cover of Preventing Tobacco Use Among Youth and Young Adults
Preventing Tobacco Use Among Youth and Young Adults: A Report of the Surgeon General.
National Center for Chronic Disease Prevention and Health Promotion (US) Office on Smoking and Health.
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