Data collection was conducted in a public high school located in an urban area of the state of Nuevo León, Mexico; urban areas are considered those with 2,500 to 99,999 inhabitants .
La recolección de datos se efectuó en una preparatoria pública, ubicada en un complemento urbano del estado de Nuevo León, México; se consideran complementos urbanos aquellas poblaciones que tienen de 2,500 a 99,999 habitantes .