Table 2 Characteristics of the study subjects
Variable | Exposed (N?=?1,404) | Unexposed (N?=?13,814) | ||
|---|---|---|---|---|
Boys | Girls | Boys | Girls | |
Total, N (%) | 1,070 (76.2) | 334 (23.8) | 10,516 (76.1) | 3,298 (23.9) |
Number of children with injuriesa | 83 (7.8) | 14 (4.2) | 717 (6.8) | 168 (5.1) |
Number of children with fracturesb | 47 (4.4) | 7 (2.1) | 312 (3.0) | 76 (2.3) |
Number of children with fractures, upper limbc | 29 (2.7) | 4 (1.2) | 239 (2.3) | 58 (1.8) |
Number of children with fracture of the lower end of radius or ulnad | 13 (1.2) | 0 (0.0) | 90 (0.9) | 21 (0.6) |
Number of children with fractures, lower limbb, c | 14 (1.3) | 3 (0.9) | 53 (0.5) | 15 (0.5) |
Number of children with fracture of shaft of tibia and fibulae | 10 (0.9) | 2 (0.6) | 16 (0.2) | 4 (0.1) |
Number of children with soft-tissue injury | 38 (3.6) | 8 (2.4) | 457 (4.3) | 105 (3.2) |
Number of children with intracranial injuries, the most common type of soft-tissue injuryf | 23 (2.1) | 5 (1.5) | 278 (2.6) | 62 (1.9) |
Number of children with multiple fracturesg | 9 (0.8) | 1 (0.3) | 42 (0.4) | 14 (0.4) |
Number of children with multiple soft-tissue injuriesg | 4 (0.4) | 1 (0.3) | 47 (0.4) | 12 (0.4) |
Number of children with injuries caused by non-accidental trauma | 0 (0.0) | 1 (0.3) | 5 (0.0) | 0 (0.0) |
Number of children with injuries undetermined whether accidentally or purposely inflicted | 0 (0.0) | 0 (0.0) | 2 (0.0) | 0 (0.0) |