The secular trend in the OHCA incidence rate in Taiwan (the number of cases per 100,000 persons), for national data of Taiwan from 2000 to 2012, by age.

* p**p***pAbbreviations: CI, confidence interval; IR, incidence rate; OHCA, out-of-hospital cardiac arrest.aFor the year 2000, t = 0; t = 1 for the year 2001, t = 2 for the year 2002, and so on. The models include lags of 1, 2 and 3 of the structural disturbance.bσ is the estimated standard deviation of the white-noise disturbance.The secular trend in the OHCA incidence rate in Taiwan (the number of cases per 100,000 persons), for national data of Taiwan from 2000 to 2012, by age.