A key result was the 52% reduction in
height/surface hazards achieved in the intervention
schools, compared with an 8% reduction
in the controls (table 3). By the second
follow up, nine of the 12 intervention schools
had eliminated at least one height/surface hazard
compared with only three control schools.
One control school had created an additional
height/surface hazard. The reduction in height
surface hazards was significantly greater in the
intervention schools (Mann-Whitney U test,
p