. Author manuscript; available in PMC: 2023 Aug 1.

Published in final edited form as: Am J Ind Med. 2022 Jun 4;65(8):627–643. doi: 10.1002/ajim.23403

Table IV.

Survey data (N=582): Reinjury rates per 100 worker-years (unadjusted), by age and timescale

Category	N	Calendar time		FTE time
Category	N	Rate	(95% CI)	Rate	(95% CI)
Overall	582	12.9	(10.4–16.1)	15.7	(12.6–19.6)
18–34	76	11.3	(5.9–21.6)	13.5	(7.0–25.9)
35–44	115	13.3	(8.2–21.8)	15.5	(9.5–25.4)
45–54	159	13.2	(8.7–20.1)	16.2	(10.7–24.6)
55–64	198	11.5	(7.7–17.2)	13.7	(9.2–20.5)
65+	34	22.7	(11.4–45.5)	35.7	(17.8–71.3)
<65	548	12.3	(9.8–15.6)	14.8	(11.7–18.7)

Abbreviations: CI, confidence interval; FTE, full-time equivalent; WC, workers’ compensation.