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Table 2 Model-adjusted trends in the rates of survival to hospital discharge

From: The effect of age, gender, economic state, and urbanization on the temporal trend in sudden cardiac arrest: a nationwide population-based cohort study

Year Unadjusted rate
(%)
aAdjusted rate Adjusted rate ratio (95% CI)
2003 8.9 reference reference
2004 7.2 7.3 0.82 (0.49–1.34)
2005 6.5 7.1 0.80 (0.49–1.30)
2006 7.9 8.7 0.98 (0.62–1.56)
2007 6.9 7.9 0.89 (0.56–1.43)
2008 9.0 11.1 1.25 (0.80–1.95)
2009 8.4 9.8 1.10 (0.71–1.70)
2010 7.2 8.2 0.92 (0.58–1.44)
2011 9.1 11.1 1.25 (0.83–1.91)
2012 9.9 11.6 1.30 (0.87–1.96)
2013 11.2 13.2 1.48 (1.00–2.23)
bAdjusted rate ratio per year (95% CI) 1.05 (1.02–1.08)
bp vale for trend  < 0.001
  1. The model was adjusted for the age, gender, household income, and regions. There were no interactions
  2. aModel-adjusted rates of survival to discharge for each year were obtained by multiplying the observed rate for the reference year (2003) by the corresponding rate ratios from a model evaluating the year as a categorical variable
  3. bAdjusted rate ratio per year and p-value for trend were calculated with a model evaluating the year as a continuous variable. CI: confidence interval