Table 2

Association between socioeconomic status and childhood injury by sex and five year age group

SubgroupLow 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.
TotalI (rich)2871148.8 (143.4 to 154.2)1.00
II1035161.2 (151.4 to 171.0)1.10 (1.02 to 1.19)
III627180.4 (166.3 to 194.6)1.22 (1.10 to 1.35)
IV686198.0 (183.2 to 212.8)1.42 (1.27 to 1.60)
V (poor)675247.7 (229.0 to 266.4)1.67 (1.48 to 1.89)<0.001
FemalesI1110119.0 (112.0 to 126.0)1.00
II396124.9 (112.6 to 137.2)1.04 (0.92 to 1.17)
III233136.7 (119.1 to 154.2)1.04 (0.90 to 1.22)
IV274156.1 (137.6 to 174.6)1.23 (1.05 to 1.44)
V256184.8 (162.2 to 207.5)1.46 (1.46 to 1.73)<0.001
MalesI1761176.6 (168.4 to 184.9)1.00
II639196.6 (181.4 to 211.9)1.11 (1.01 to 1.22)
III394222.6 (200.6 to 244.6)1.16 (1.03 to 1.30)
IV412240.9 (217.7 to 264.2)1.30 (1.16 to 1.45)
V419312.7 (282.8 to 342.6)1.64 (1.46 to 1.84)<0.001
0–4 yearsI509118.5 (108.2 to 128.8)1.00
II207134.4 (116.1 to 152.7)1.11 (0.93 to 1.32)
III123141.4 (116.4 to 166.4)1.10 (0.87 to 1.40)
IV193181.2 (155.6 to 206.8)1.30 (1.02 to 1.65)
V154193.7 (163.1 to 224.3)1.23 (0.93 to 1.63)0.08
5–9 yearsI579113.9 (104.6 to 123.1)1.00
II196124.8 (107.4 to 142.3)1.07 (0.90 to 1.26)
III116138.9 (113.6 to 164.2)1.08 (0.88 to 1.34)
IV120142.0 (116.6 to 167.4)1.09 (0.87 to 1.36)
V117182.8 (149.7 to 215.9)1.32 (1.05 to 1.67)0.04
10–14 yearsI858169.2 (157.9 to 180.6)1.00
II289175.2 (155.0 to 195.4)1.11 (0.96 to 1.29)
III159182.8 (154.4 to 211.2)1.16 (0.94 to 1.42)
IV142195.9 (163.6 to 228.1)1.19 (0.93 to 1.52)
V154250.4 (210.9 to 290.0)1.30 (0.99 to 1.70)0.02
15–19 yearsI925190.9 (178.6 to 203.2)1.00
II343206.6 (184.8 to 228.5)1.07 (0.93 to 1.22)
III223247.8 (215.3 to 280.3)1.34 (1.13 to 1.58)
IV231316.4 (275.6 to 357.2)1.65 (1.36 to 2.00)
V250370.4 (324.5 to 416.3)2.33 (1.92 to 2.82)<0.001