Table 2

Results of bivariate stratified analysis on the association between physical fighting on school property and selected characteristics among US High School students, 2005
Characteristics
 Total
 Males
 Females
Age (years)
 Unadjusted OR [95% CI]
     ≤ 14
 1.00
 1.00
 1.00
     15
 1.09 [0.86, 1.37]
 1.31 [0.96, 1.78]
 0.79 [0.55, 1.14]
     16
 0.92 [0.73, 1.16]
 0.99 [0.73, 1.35]
 0.71 [0.49, 1.04]
     17
 0.59 [0.46, 0.75]
 0.70 [0.51, 0.96]
 0.40 [0.27, 0.59]
     18+
 0.61 [0.46, 0.80]
 0.64 [0.45, 0.91]
 0.46 [0.29, 0.75]
Gender


     Females
 1.00

     Males
 2.31 [2.01, 2.64]
 -
 -
Ethnicity


     White
 1.00
 1.00
 1.00
     American Indian or Alaska Native
 2.15 [1.34, 3.43]
 2.49 [1.44, 4.31]
 1.83 [0.70, 4.77]
     Asians
 0.68 [0.38, 1.08]
 0.68 [0.34, 1.12]
 0.68 [0.39, 1.19]
     Blacks
 1.54 [1.32, 1.80]
 1.30 [1.06, 1.59]
 2.19 [1.69, 2.83]
     Native Hawaii or other Pacific Islander
 2.46 [1.26, 4.82]
 3.17 [1.28, 7.86]
 2.42 [0.90, 6.46]
     Hispanics
 1.53 [1.27, 1.84]
 1.46 [1.15, 1.85]
 1.80 [1.32, 2.45]
Cigarette smoking in the last 30 days


     No
 1.00
 1.00
 1.00
     Yes
 2.52 [2.19, 2.91]
 2.38 [1.99, 2.86]
 2.95 [2.32, 3.74]
Alcohol use in the last 30 days


     No
 1.00
 1.00
 1.00
     Yes
 2.12 [1.85, 2.44]
 2.24 [1.88, 2.66]
 1.98 [1.58, 2.49]
Ever used illegal drugs


     No
 1.00
 1.00
 1.00
     Yes
 2.72 [2.37, 3.13]
 2.44 [2.04, 2.90]
 3.33 [2.62, 4.24]
Property stolen or deliberately damaged on school property in the last 12 months


     No
 1.00
 1.00
 1.00
     Yes
 2.51 [2.20, 2.86]
 2.30 [1.95, 2.72]
 2.85 [2.28, 3.57]
Threatened or injured with a weapon on school property in the last 12 months


     No
 1.00
 1.00
 1.00
     Yes
 4.68 [3.74, 5.84]
 4.72 [3.96, 5.63]
 4.22 [3.15, 5.64]
Videogame (hours/school day)


     ≤ 2
 1.00
 1.00
 1.00
     3+
 1.44 [1.20, 1.87]
 1.60 [1.37, 1.87]
 1.31 [0.97, 1.77]

Rudatsikira et al. Clinical Practice and Epidemiology in Mental Health 2008 4:16   doi:10.1186/1745-0179-4-16