Table 2

School-related behaviors by intervention and time


TM Group
CTL Group




Pre-intervention Period (n)
Intervention Period
Pre-intervention Period (n)
Intervention Period
p value*

Tardy periods
7.6 ± 6.9 (22)
7.1 ± 6.1
6.3 ± 7.0 (19)
6.9 ± 6.0
ns
Absentee periods
25.7 ± 24.7 (18)
19.3 ± 19.8
12.5 ± 7.3 (17)
17.3 ± 12.8
.05
Grades
79.3 ± 7.5 (20)
79.4 ± 7.9
73.6 ± 14.3 (18)
72.7 ± 15.2
ns
Rule infractions
0.2 ± 0.4 (21)
0.1 ± 0.3
0.0 ± 0.0 (19)
0.3 ± 0.8
.03
Days suspended
0.8 ± 1.8 (23)
0.5 ± 1.2
0.0 ± 0.0 (18)
1.2 ± 3.0
.04

Values are means ± standard deviations. *P values are for group x time interactions. NS = not significant.

Barnes et al. Health and Quality of Life Outcomes 2003 1:10   doi:10.1186/1477-7525-1-10