Table 1 Characteristics of the sample (N = 99)
|  | Intervention (N = 49) | Control group (N = 50) | t* | χ2†| p |
|---|---|---|---|---|---|
Mean (SD) age at accident, years | 11.8 (2.6) | 11.3 (2.8) | 0.77 | Â | .44 |
Sex | Â | Â | Â | Â | Â |
Boys (%) | 29 (59.2) | 29 (58.0) | Â | Â | Â |
Girls (%) | 20 (40.8) | 21 (42.0) | Â | 0.01 | .91 |
Socio-economic status | Â | Â | Â | Â | Â |
Lower (%) | 6 (12.2) | 4 (8.0) | Â | Â | Â |
Middle (%) | 16 (32.7) | 19 (38.0) | Â | Â | Â |
Upper (%) | 24 (49.0) | 22 (44.0) | Â | Â | Â |
Unknown (%) | 3 (6.1) | 5 (10.0) | Â | 0.09 | .77 |
Mean (SD) number of preceding life events | 1.3 (1.6) | 1.1 (1.4) | 0.64 | Â | .53 |
Mean (SD) number of life events that followed | 1.1 (1.5) | 1.1 (1.8) | -0.15 | Â | .88 |
Type of accident | Â | Â | Â | Â | Â |
Pedestrian (%) | 16 (32.7) | 18 (36.0) | Â | Â | Â |
Car passenger (%) | 8 (16.3) | 7 (14.0) | Â | Â | Â |
Bicycle/motorcycle (%) | 17 (34.7) | 17 (34.0) | Â | Â | Â |
Other (%) | 8 (16.3) | 8 (16.0) | Â | 0.07 | .79 |
Mean (SD) score on the Modified Injury Severity Scale | 6.1 (4.6) | 5.8 (5.3) | 0.26 | Â | .80 |
Medical treatment | Â | Â | Â | Â | Â |
Inpatient (%) | 31 (63.3) | 30 (60.0) | Â | Â | Â |
Outpatient (%) | 18 (36.7) | 20 (40.0) | Â | 0.11 | .74 |