Descriptive comparison between children with and without hospital-attended injuries and univariable and multivariable logistic regression analysis of potential risk factors (N=26 087)
| Overall (N=26 087) | Without injuries | With injuries | OR (95% CI) | aOR (95% CI) | |
| % (N)/mean (SD) | % (N)/mean (SD) | % (N)/mean (SD) | |||
| Family factors | |||||
| Older sibling(s) | 53.3 (13 902) | 53.1 (13 197) | 56.5 (705) | 1.15 (1.02 to 1.29)* | 1.22 (1.08 to 1.39)** |
| Maternal age | 29.7 (4.43) | 29.7 (4.44) | 29.5 (4.44) | 0.95 (0.89 to 1.02) | 0.93 (0.86 to 1.00)* |
| Maternal education ≤12 years | 37.6 (9534) | 37.6 (9078) | 37.6 (456) | 0.99 (0.88 to 1.12) | 0.90 (0.80 to 1.02) |
| Mother unemployed or disabled | 4.1 (1069) | 4.1 (1017) | 4.2 (52) | 1.01 (0.76 to 1.36) | 0.95 (0.71 to 1.26) |
| Mother and child not living with the father | 3.4 (819) | 3.4 (778) | 3.6 (41) | 1.06 (0.77 to 1.46) | 0.96 (0.69 to 1.33) |
| Financial problems | 18.6 (4379) | 18.4 (4129) | 22.4 (250) | 1.27 (1.09 to 1.48)** | 1.18 (1.01 to 1.39)* |
| Maternal mental health problems (8-32) | 10.2 (2.84) | 10.1 (2.82) | 10.5 (3.06) | 1.12 (1.06 to 1.18)*** | 1.09 (1.03 to 1.16)** |
| Child factors | |||||
| Male | 50.8 (13 250) | 50.5 (12 540) | 56.9 (710) | 1.30 (1.16 to 1.45)*** | 1.26 (1.11 to 1.42)*** |
| Gestational age | 39.4 (1.94) | 39.4 (1.96) | 39.5 (1.79) | 1.04 (1.01 to 1.07)* | 1.04 (1.00 to 1.07)* |
| Gross motor development | |||||
| All skills achieved | 82.2 (19 742) | 82.1 (18 794) | 83.8 (948) | Reference | Reference |
| One skill not achieved | 14.5 (3481) | 14.5 (3322) | 14.1 (159) | 0.94 (0.80 to 1.12) | 0.94 (0.79 to 1.12) |
| Two or three skills not achieved | 3.4 (800) | 3.4 (776) | 2.1 (24) | 0.65 (0.43 to 0.98)* | 0.65 (0.42 to 0.99)* |
| Fine motor development | |||||
| All skills achieved | 73.8 (17 569) | 73.9 (16 754) | 72.3 (815) | Reference | Reference |
| One skill not achieved | 21.0 (5004) | 21.0 (4774) | 20.4 (230) | 1.01 (0.87 to 1.18) | 1.03 (0.89 to 1.19) |
| Two or three skills not achieved | 5.2 (1236) | 5.1 (1154) | 7.3 (82) | 1.45 (1.15 to 1.83)** | 1.55 (1.22 to 1.97)*** |
| Communication development | |||||
| All skills achieved | 46.6 (11 117) | 46.8 (10 631) | 43.1 (486) | Reference | Reference |
| One skill not achieved | 26.5 (6313) | 26.4 (5989) | 28.7 (324) | 1.16 (1.00 to 1.34)* | 1.11 (0.95 to 1.28) |
| Two or three skills not achieved | 26.9 (6413) | 18.3 (6095) | 19.3 (318) | 1.13 (0.98 to 1.31) | 1.04 (0.89 to 1.22) |
| Social development | |||||
| All skills achieved | 71.3 (17 094) | 71.4 (16 302) | 70.3 (792) | Reference | Reference |
| One skill not achieved | 19.6 (4688) | 19.5 (4451) | 21.0 (237) | 1.09 (0.94 to 1.27) | 1.04 (0.90 to 1.21) |
| Two or more skill not achieved | 6.6 (1582) | 6.6 (1510) | 6.4 (72) | 0.99 (0.77 to 1.26) | 0.92 (0.73 to 1.15) |
| Temperament | |||||
| Activity (3–15) | 12.1 (1.96) | 12.1 (1.96) | 12.2 (1.97) | 1.09 (1.02 to 1.16)** | 1.02 (0.95 to 1.09) |
| Emotionality (3–15) | 8.2 (2.27) | 8.2 (2.26) | 8.3 (2.37) | 1.06 (0.99 to 1.12) | 1.02 (0.96 to 1.09) |
| Shyness (3–15) | 6.1 (1.93) | 6.1 (1.93) | 6.0 (1.95) | 0.92 (0.87 to 0.98)** | 0.92 (0.86 to 0.98)* |
| Externalising behaviour | |||||
| Attention | |||||
| No attention problem | 10.7 (2464) | 10.8 (2371) | 8.7 (93) | Reference | Reference |
| One attention problem | 41.9 (9653) | 42.1 (9231) | 39.3 (422) | 1.15 (0.91 to 1.44) | 1.13 (0.89 to 1.43) |
| Two attention problems | 28.7 (6611) | 28.7 (6288) | 30.0 (323) | 1.26 (1.00 to 1.60) | 1.19 (0.93 to 1.53) |
| Three attention problems | 18.7 (4294) | 18.5 (4057) | 22.0 (237) | 1.47 (1.16 to 1.86)** | 1.33 (1.02 to 1.72)* |
| Aggression | |||||
| No aggression problem | 14.6 (3278) | 14.6 (3151) | 12.1 (127) | Reference | Reference |
| One aggression problem | 22.8 (5953) | 26.3 (5685) | 25.5 (268) | 1.13 (0.92 to 1.38) | 1.07 (0.87 to 1.31) |
| Two aggression problems | 24.3 (6332) | 27.9 (6018) | 29.8 (314) | 1.21 (0.99 to 1.47) | 1.09 (0.89 to 1.34) |
| Three or more aggression problems | 27.2 (7091) | 31.2 (6747) | 32.7 (344) | 1.21 (1.00 to 1.47) | 1.01 (0.82 to 1.25) |
*p<0.05, **p<0.01, ***p<0.001 from Wald test statistic.
aOR, adjusted OR.