Prevalence and number of bruises at different development stages and ages as recorded in previous studies; the data from the current study refer to the first collection only for the child, to make them comparable with the other studies
| Percentage of children with bruises (95% CI) and number of bruises per developmental stage | ||||
|---|---|---|---|---|
| Sugar et al3 | Carpenter1 | Labbe and Caouette2 | Kemp et al (per collection) | |
| Development stage | Precruisers 2.2 (1.2 to 5.8) | Precrawlers:3.9 (1.6 to 9.7) | Premobile:not rolling over, 1.3 (0.2 to 6.9) | |
| Rolling over 10.9 (5.1 to 21.8) | ||||
| Cruisers 17.8 (11.6 to 26.4)) | Crawlers 17.3 (9.4 to 29.7) | Early mobile:55.8 (41.1 to 59.6) | ||
| Walkers 51.9 (46.4 to 57.3) | Walkers 37.5 (21.2 to 57.3) | Walkers 87.5 (81.3 to 91.8) | ||
| Age in months | <6:0.5 (0.1 to 2) | <8:1.2% (95% CI 0.4 to 3.5) | ||
| 6–12:10.6 (7.2 to 15.3) | 6–12:12.4% (8.3 to 18.1) | |||
| 12–24:42 (35.4 to 38.3) | ||||
| 24–35:60.9 (51.7 to 69.3) | 9–48:60.3 (57.2 to 63.2) | |||
| Mean number of bruises in children who had a bruise (range) | Precruisers 1.3 (range 1–2 | Premobile 1.1 (1–2) | ||
| Cruisers range (1–5) | Early mobile 2.0 (1–6) | |||
| Walkers:2.4 (range 1–11) | Walking 3.5 (1–13) | |||