Fig 1.
Flow diagram of the process for obtaining the final sample of the study.
Fig 2.
Component planes of the recorded variable.
The Hits map can be seen in the right bottom corner. Empty cells show a lack of cases and the greener cells indicate a large accumulation of adolescents. Numbers in black (1–4) refer to quantitatively-analyzed clusters with results presented in Table 1. Rectangles on the right of each component map indicate the lower (bluish) and higher (reddish) values of each variable. Values for sex are 0 = boys and 1 = girls. Weight status is represented in categories (1 = normal weigh, 2 = overweight and 3 = obese). The rest of the variables are expressed in hours. In order to better understand the maps, it is important to note that participants included in every neuron (hexagon) are the same in all component planes. It should also be noted that each neuron represents the same subjects in all of the variable maps. Moreover, the neurons that are close to each other are more similar than those farther away. Therefore, x and y axis are related to the neuron placement in a multidimensional space. The x and y axes of each map do not represent any variable, but indicate the neuron position.
Table 1.
Descriptive statistics of each cluster (minutes/day).
Fig 3.
Participants’ migrations between clusters of different weight status.
Fig 4.
Classification tree.
Table 2.
Behavioral characteristics and percentages of change in overweight subjects who switched to a normal weight cluster.