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

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

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

The model was adjusted for the age, gender, household income, and regions. There were no interactions
^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
^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

ISSN: 2466-1171