Table 5.

Postinjury cardiovascular disease hospitalisations and record of beta blocker (BB) use yes versus no, among injury cohort: adjusted incidence rate ratios (IRRs) and 95% CIs

Record of BB medication	IRR 95% CI all cohort data	IRR 95% CI subset cohort data 2013+
BB 4 months prior and 4 months after injury n=4329 (continuous use)	1.29 (1.17 to 1.42)	1.31 (1.13 to 1.56)
BB started within 30 days after injury (n=432) (first 30 days after injury were excluded from analysis)	1.69 (1.37 to 2.08)	1.65 (1.22 to 2.24)
BB started within 60 days after injury (n=619) (first 60 days after injury were excluded from analysis)	1.63 (1.37 to 1.94)	1.57 (1.22 to 2.03)
BB started within 90 days after injury (n=797) (first 90 days after injury were excluded from analysis)	1.75 (1.45 to 2.02)	1.86 (1.45 to 2.37)
BB started within 120 days after injury (n=928) (first 120 days after injury were excluded from analysis)	1.63 (1.40 to 1.89)	1.70 (1.35 to 2.14)