Table 1

Demographics of the study cohort

Number of patientsAll patients
1824		<16 years
172		16–19 years
861		20–24 years
791		P value
Patient characteristics
 Age, years19 (17–21)15 (14–15)17 (17–18)22 (20–23)<0.001
 Male, n (%)1772 (97)169 (98)847 (98)756 (96)0.002
 Index of Multiple Deprivation*42 (32–50)44 (33–50)43 (33–50)41 (31–50)0.38
 Most deprived quintile, n (%)*1127/1594 (71)116/157 (74)564/776 (73)447/661 (68)0.06
Injury characteristics
 Injury Severity Score2 (1–9)1 (1–9)2 (1–9)2 (1–9)0.39
 Severe injury, n (%)† 225 (12)24 (14)99 (12)102 (13)0.51
 Multiple injuries, n (%)947 (52)81 (47)456 (53)410 (52)0.37
 Hospital admission, n (%)1116 (61)103 (62)548 (64)465 (59)0.13
 Length of stay, days‡ 2 (1–4)2 (1–4)2 (1–4)2 (1–4)0.61
 In-hospital mortality, n (%)39 (2)7 (4)12 (1)20 (2)0.05

  • Values are median with IQR unless stated.

  • P values compare age groups with Kruskal-Wallis test for continuous data and χ2 test for categorical data.

  • *Excluding 230 patients with missing home postcodes.

  • ↵†Injury Severity Score >15.

  • ↵‡Hospital admissions only.