Table 3

Association between socioeconomic status and childhood injury by type of injury

Injury outcomeLow income category*InjuriesRate/1000 (95% CI)Adjusted rate ratio† (95% CI)Linear trend test (p value)
*Low income categories based on % individuals within enumeration area living in households with incomes below poverty lines. Percentages for categories I, II, III, IV and V were 0–9.9, 10–19.9, 20–29.9, 30–39.9, and 40%+ respectively.
†Adjusted rate ratios were adjusted for age group, sex, and selected socioeconomic status covariates listed in table 1. CI = confidence interval.
Home injuriesI (rich)70636.6 (33.9 to 39.3)1.00
II26240.8 (35.9 to 45.8)1.06 (0.92 to 1.23)
III17349.8 (42.4 to 57.2)1.29 (1.09 to 1.52)
IV19255.4 (47.6 to 63.2)1.35 (1.14 to 1.60)
V (poor)21378.2 (67.7 to 88.7)1.75 (1.44 to 2.13)<0.001
Sports injuriesI82842.9 (40.0 to 45.8)1.00
II27943.5 (38.4 to 48.6)1.02 (0.90 to 1.17)
III15745.2 (38.1 to 52.2)1.06 (0.90 to 1.26)
IV14040.4 (33.7 to 47.1)1.08 (0.90 to 1.29)
V12244.8 (36.8 to 52.7)1.16 (0.96 to 1.41)0.10
Recreation or play injuriesI89546.4 (43.4 to 49.4)1.00
II32150.0 (44.5 to 55.5)1.06 (0.93 to 1.22)
III19957.3 (49.3 to 65.2)1.08 (0.91 to 1.27)
IV22564.9 (56.4 to 73.4)1.17 (0.99 to 1.40)
V20876.3 (66.0 to 86.7)1.37 (1.13 to 1.65)0.004
Injuries from fallsI88946.1 (43.0 to 49.1)1.00
II30747.8 (42.5 to 53.2)1.03 (0.90 to 1.18)
III18854.1 (46.4 to 61.8)1.09 (0.92 to 1.28)
IV23467.5 (58.9 to 76.2)1.32 (1.13 to 1.53)
V20575.2 (64.9 to 85.5)1.42 (1.21 to 1.68)<0.001
Traffic injuriesI21010.9 (9.4 to 12.4)1.00
II7712.0 (9.3 to 14.7)1.12 (0.86 to 1.45)
III31 8.9 (5.8 to 12.1)0.83 (0.57 to 1.21)
IV4111.8 (8.2 to 15.4)1.18 (0.84 to 1.64)
V4215.4 (10.8 to 20.1)1.51 (1.08 to 2.10)0.06