Analysis of the risk and risk factors for injury in people with and without dementia: a 14-year, retrospective, matched cohort study

Table 1 Characteristics of people with and without dementia

Variables	Total		People with dementia		People without dementia		p value
Variables	n	%	n	%	n	%	p value
Total	455,630		91,126	20.00	364,504	80.00
Gender							0.999
Male	237,945	52.22	47,589	52.22	190,356	52.22
Female	217,685	47.78	43,537	47.78	174,148	47.78
Age group (years)							0.999
50–64	21,660	4.75	4332	4.75	17,328	4.75
65–74	85,675	18.80	17,135	18.80	68,540	18.80
75–84	215,435	47.28	43,087	47.28	172,348	47.28
≧85	132,860	29.16	26,572	29.16	106,288	29.16
Catastrophic illness							< 0.001
Without	370,567	81.33	71,996	79.01	298,571	81.91
With	85,063	18.67	19,130	20.99	65,933	18.09
Injury outpatient/ER 1 year before index date							< 0.001
Without	313,474	68.80	61,083	67.03	252,391	69.24
With	142,156	31.20	30,043	32.97	112,113	30.76
Comorbidity
Diabetes mellitus							< 0.001
Without	333,830	73.27	67,515	74.09	266,315	73.06
With	121,800	26.73	23,611	25.91	98,189	26.94
Hypertension							< 0.001
Without	280,288	61.52	58,684	64.40	221,604	60.80
With	175,342	38.48	32,442	35.60	142,900	39.20
Hyperlipidemia							< 0.001
Without	431,603	94.73	88,066	96.64	343,537	94.25
With	24,027	5.27	3060	3.36	20,967	5.75
Cardiovascular disease							< 0.001
Without	408,717	89.70	78,975	86.67	329,742	90.46
With	46,913	10.30	12,151	13.33	34,762	9.54
Chronic kidney disease							< 0.001
Without	412,668	90.57	85,668	94.01	327,000	89.71
With	42,962	9.43	5458	5.99	37,504	10.29
Alcohol-related disease							< 0.001
Without	454,861	99.83	90,925	99.78	363,936	99.84
With	769	0.17	201	0.22	568	0.16

Diabetes mellitus: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) 250; hypertension, ICD-9-CM 401.1, 401.9, 402.10, 402.90, 404.10, 404.90, 405.1, 405.9; hyperlipidemia, ICD-9-CM 272; cerebrovascular disease, ICD-9-CM 433–434, 436; chronic kidney disease, ICD-9-CM 274.1, 403–404, 440.1, 442.1, 447.3, 572.4, 580–589, 642.1, 646.2, 753); alcohol-related disease, ICD-9-CM 291, 303
p value by Chi-square/Fisher exact test on category variables and t test on continue variables
ER emergency room

ISSN: 1758-9193