One study reported that during 1999 and 2000, 48.5% of American adolescents had experimented cigarettes, but only 7.8% of them were regular smokers.
Un estudio informó que, durante los años de 1999 y 2000, el 48,5% de adolescentes americanos había experimentado cigarrillos, pero solamente el 7,8% era fumante regular.
Um estudo relata que, durante os anos de 1999 e 2000, 48.5% dos adolescentes norte americanos havia experimentado cigarro, mas somente 7.8% era fumante regular.