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TABLE 1—— Changes in Current Smoking Prevalence Among US Students Before and After the Launch of the "truth" Campaign in 2000: 1997–2002

	Prevalence of Current Smoking, %			Average Annual Percentage Change (95% Confidence Interval)
Grade	1997	2002	Change	1997–1999	2000–2002

All	28.0	18.0	–35.7	–3.2 (–3.8, –2.6)	–6.8 (–7.5, –6.1)
8th	19.4	10.7	–44.8	–3.4 (–4.6, –2.1)	–9.0 (–10.4, –7.6)
10th	29.8	17.7	–40.6	–4.6 (–5.6, –3.6)	–8.7 (–9.8, –7.5)
12th	36.5	26.7	–26.8	–1.8 (–2.7, –1.0)	–5.1 (–6.1, –3.9)