Table 1 Sample characteristics. Students from 8th and 9th grade, GUS data 2018-2019
From: Adolescent school injuries and classroom sex compositions in German secondary schools
Dependent variables | |||||
% of obs. with school injury | 4.4 | ||||
% of obs. with school injury due to aggression | 1.3 | ||||
Continuous independent variables | mean | sd | min | max | |
Mental health (individual-level) | 2.87 | .75 | 0 | 4 | |
Family affluence (individual-level) | 3.05 | .72 | 0 | 4 | |
Family affluence (class-level, z-standardized) | 0 | 1 | -4.73 | 2.08 | |
Classroom sex ratio (class-level, percentage male students) | 46.5 | 14.2 | 0 | 100 | |
Class size (number of students usually in class) | 26.2 | 3.1 | 15 | 33 | |
Dichotomous independent variables | |||||
% of obs. from male students | 46.2 | ||||
% of obs. from students with migrant background | 30.6 | ||||
% of obs. from students at the Gymnasium (upper secondary) | 60.4 | ||||
% of obs. from students at East German schools | 15.3 | ||||
% of obs. from students at rural schools | 76.5 | ||||
% of obs. from grade 9 | 45.6 | ||||
Number of observations | 13,131 | ||||
Number of students | 9,204 | ||||
Number of classes | 520 | ||||
Number of schools | 132 | ||||