However, extrapolating from such a small sample is problematic, especially as other data collected at schools in some of the sampled districts suggests that levels of re-infection are high.
The study compounds five years of data collected at 34 public and charter schools that completed the pilot program, and compares their performance in the key areas of test score improvement, achievement gap closure and dropout rate reduction to non-TAP schools.
For this study, we used data collected at baseline from 8 randomly selected elementary schools from rural communities in South Carolina (SC), Mississippi (MS), Kentucky (KY), and California (CA).
Extensive qualitative data was collected at school and classroom level, and helped identify factors which contributed to the positive findings.
Data collected at Usona (near Mariposa, California).
Multilevel analysis was considered because data were collected at schools.
Dataon maternal smoking were collected at birth and data on headache and other confoundingfactors were collected at school age using the same questionnaire completed bythe mothers in the two cities.
These data were augmented by contextual data collected from school ICT-coordinators, school principals, and the ICILS national research centres.
We report contact data collected from a single school day at one US high school, limiting the generalizability of our findings.
During approximately a 1-month sampling period at each school, personal and outdoor school-site monitoring data were collected at four elementary schools: two schools adjacent to and two schools farther away from a highway.
Before the programme implementation, nutritional environmental data were collected at high schools via surveys of the staff.
