Associations between personal and environmental characteristics and severity (AIS) of fall injury from play equipment
| Variable | Number of cases3-150 | Severity of injury (%) | Odds ratio† (95% CI) | p Value | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| (n=930) | % | AIS 1 (n=387) | AIS 2 3 (n=543) | ||||||||
| Type of surface | <0.01 | ||||||||||
| Sand | 422 | 45.3 | 45.7 | 54.3 | Ref‡ | ||||||
| Grass | 248 | 26.7 | 31.5 | 68.5 | 1.68 (1.17, 2.36) | ||||||
| Other | 260 | 28.0 | 44.6 | 55.4 | 1.01 (0.73, 1.39) | ||||||
| Type of playground | 0.30 | ||||||||||
| Municipal | 519 | 55.8 | 45.3 | 54.7 | Ref | ||||||
| School | 109 | 11.7 | 31.2 | 68.8 | 1.26 (0.79, 2.02) | ||||||
| Daycare | 28 | 3.0 | 57.1 | 42.9 | 0.65 (0.29, 1.46) | ||||||
| Residential | 228 | 24.5 | 36.0 | 64.0 | 1.29 (0.91, 1.84)§ | ||||||
| Others | 46 | 4.9 | 43.5 | 56.5 | 0.76 (0.33, 1.66) | ||||||
| Type of equipment | 0.62 | ||||||||||
| Climber | 190 | 20.4 | 37.9 | 62.1 | 1.19 (0.74, 1.89) | ||||||
| Module | 253 | 27.2 | 41.1 | 58.9 | 0.93 (0.58, 1.48) | ||||||
| Swing | 176 | 18.9 | 42.6 | 57.4 | Ref | ||||||
| Slide | 160 | 17.2 | 47.5 | 52.5 | 1.19 (0.74, 1.89) | ||||||
| Accident's location¶ | <0.01 | ||||||||||
| Island of Montreal | 556 | 59.8 | 49.3 | 50.7 | Ref | ||||||
| Elsewhere | 374 | 40.2 | 30.2 | 69.8 | 2.03 (1.51, 2.75) | ||||||
| Supervision | 0.03 | ||||||||||
| Yes | 596 | 64.1 | 46.3 | 53.7 | Ref | ||||||
| No | 334 | 35.9 | 33.2 | 66.8 | 1.39 (1.02, 1.89) | ||||||
| Age (y) | |||||||||||
| 1–4 | 351 | 37.7 | 51.0 | 49.0 | Ref | <0.01 | |||||
| 5–9 | 441 | 47.4 | 34.5 | 65.5 | 1.94 (1.43, 2.63) | ||||||
| 10–14 | 138 | 14.8 | 40.6 | 59.4 | 1.74 (1.13, 2.67) | ||||||
| Sex | |||||||||||
| Male | 504 | 54.2 | 41.9 | 58.1 | Ref | 0.85 | |||||
| Female | 426 | 45.8 | 41.3 | 58.7 | 0.97 (0.74, 1.28) | ||||||
| Playground use | 0.07 | ||||||||||
| Rarely | 236 | 25.4 | 31.8 | 68.2 | Ref | ||||||
| Frequently | 694 | 74.6 | 45.0 | 55.0 | 0.71 (0.51, 0.98) | ||||||
↵3-150 Totals may vary because of missing data and to the other category that is not always reported. †Adjusted odds ratios (ORa) and 95% confidence intervals (CI) were estimated by the logistic regression model with severity of injury as the dependent variable. The final model includes the following independent variables: type of surface, age, location of the accident, month, number of medical visits for an injury per year, playgrounds' utilisation. Mothers' educational level, mother's tongue, sex, number of children in the family, year of accident, type of equipment, supervision, and type of playground were not kept in the final model. ‡Ref indicates the reference category used to calculate the ORa. §Surface and type of playground were highly correlated. ORa was calculated in removing surface. ¶Proxy for the proximity from the hospitals.