Table 4

Multivariate results of injuries for interaction between CTC phase and age group

Age 0–4 years (ref=20–34 years)Age 5–9 years (ref=20–34 years)Age 10–14 years (ref=20–34 years)Age 15–19 years (ref=20–34 years)
RR(95% CI)RR(95% CI)RR(95% CI)RR(95% CI)
All injury admissions
 Phase (phase 0=ref)
 Implementation (phase 1–4)1.05(0.97 to 1.13)1.03(0.95 to 1.11)1.05(0.98 to 1.12)1.01(0.95 to 1.08)
 Completion (phase 5)0.88(0.79 to0.98)0.91(0.80 to 1.02)0.95(0.87 to 1.05)0.99(0.90 to 1.08)
 Second cycle (phase 6)0.76(0.69 to0.83)0.88(0.80 to0.96)0.92(0.86 to1.00)0.90(0.84 to0.98)
Unintentional injuries*
 Phase (phase 0=ref)
 Implementation (phase 1–4)1.02(0.94 to 1.10)0.99(0.91 to 1.07)0.97(0.90 to 1.04)0.98(0.91 to 1.05)
 Completion (phase 5)0.87(0.77 to0.98)0.90(0.80 to 1.03)0.91(0.82 to 1.01)0.97(0.87 to 1.08)
 Second cycle (phase 6)0.74(0.67 to0.81)0.85(0.77 to0.94)0.90(0.83 to0.97)0.91(0.83 to0.99)
Transport injuries
 Phase (phase 0=ref)
 Implementation (phase 1–4)0.81(0.65 to 1.02)0.95(0.81 to 1.12)1.01(0.89 to 1.15)0.94(0.84 to 1.06)
 Completion (phase 5)0.77(0.56 to 1.05)0.91(0.75 to 1.10)1.05(0.88 to 1.25)1.13(0.96 to 1.33)
 Second cycle (phase 6)0.74(0.55 to0.98)0.81(0.68 to0.96)1.02(0.90 to 1.15)1.11(0.99 to 1.24)
  • Results are presented as incidence rate ratios, RR (the effect size of the interaction terms are exponentiated).

  • The parameter estimates are the interaction variable for CTC phase by age group, adjusted for age, sex, socioeconomic index for area remoteness and year. Results statistically significant at p=0.05 are shown in bold font.

  • *Sports injury are excluded.

  • CTC, Communities That Care.