Table 3 Trend analysis

From: Effect of dementia on the incidence, short-term outcomes, and resource utilization of invasive mechanical ventilation in the elderly: a nationwide population-based study

	MV in cases with dementia			MV in cases without dementia			Parallelism test
	2000	2013	AAPC (95% CI)	2000	2013	AAPC (95% CI)	Parallelism test
Proportion (%)	1.51	2.64	3.8 (3.0, 4.5)^†	98.5	97.4	− 0.1 (− 0.1, − 0.1)^†	P < 0.001
Hospital discharge rate (per 10,000)	1.76	3.57	4.71 (3.6, 5.8)^†	114	131	0.91 (0.4, 1.4)^†	P = 0.005
Population rate (per 100,000)	3.1	6.9	5.39 (4.0, 6.7)^†	203.6	253.3	1.62 (0.9, 2.4)^†	P = 0.030
MV ≥ 96 h (%)	24.6	28.4	− 0.8 (− 2.3, 0.7)	31.2	34.9	0.99 (0.7, 1.3)^†	P = 0.031
CFR (%)	55.9	50.2	− 0.30 (− 1.1, 0.5)	51.9	44.5	− 1.19 (− 1.3, − 1.0)^†	P = 0.10

MV invasive mechanical ventilation, AAPC average annual percentage change, 95%CI 95% confidence interval, CFR: case fatality rate
^†Statistically significant

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