An exploratory and cross-sectional study was
performed. Data collection happened from July to
August 2006, before the children’s holiday period. The
study universe consisted of children from six to seven
years old in the first grade of an elementary school
from Celaya, Guanajuato - Mexico. The sample was
nonprobabi listic. The eligibility criterion was: children
from six to seven years old, both children and parents
accepting to participate voluntarily in the research.
The exclusion criterion was: children absent at the
moment of data collection. The variables considered
were: age, gender, education level and drugs use (fact
of having already consumed drugs, in other words, if
the child has either experimented or has been using
drugs).