Stroke in-hospital survival and its predictors: the first results from Tabriz Stroke Registry of Iran

Figures & data

Table 1 Demographic data of recruited cases and P-value for mortality prediction

Demographics	Sex	Number	Percentage	p-value
Previous stroke	Male	226	21.8	0.56
	Female	198	20.8
	Total	424	21.3
Diabetes mellitus	Male	802	77.4	0.001*
	Female	675	70.8
	Total	14.77	74.2
Hypertension	Male	654	63.1	<0.001*
	Female	706	74
	Total	1,360	68.3
Smoking	Male	312	30.1	<0.001*
	Female	23	2.4
	Total	335	16.8
Hyperlipidemia	Male	142	13.7	<0.001*
	Female	195	20.4
	Total	337	16.9

Note:

* Statistically significant.

Table 2 Blood bioassay results of patients with stroke between males and females

Assay	Sex	Mean	Median	SD	IQR
Baseline HDL	Male		36		12
	Female		41		14
	Total		38		13
Baseline LDL	Male		92		45
	Female		99		48
	Total		95		46
Baseline TG	Male		105		68
	Female		120		86
	Total		111		75
Baseline cholesterol	Male	165		44
	Female	183		47
	Total	174		46
Baseline FBS	Male		105		38
	Female		107		52
	Total		105		45
Baseline Hct	Male	43		5.4
	Female	39		5.2
	Total	41		5.6
Baseline Hb	Male	14		2
	Female	12.7		1.9
	Total	13.4		2.1

Abbreviations: FBS, fasting blood sugar; Hb, hemoglobin; Hct, hematoccrit; HDL, high-density lipoprotein; IQR < interquartile range; LDL, low-density lipoprotein; TG, triglyceride.

Table 3 In-hospital mortality statistics according to the stroke type, age group, and center

Age groups		All ages			Nonelderly (<65 years)			Elderly (≥65 years)
Center name	Stroke type	NAP	CFP	CFP 95% CI	NAP	CFP	CFP 95% CI	NAP	CFP	CFP 95% CI
Imam Reza Center	Ischemic	638	0.202	0.172–0.235	270	0.126	0.089–0.172	368	0.258	0.214–0.306
	Hemorrhagic	281	0.363	0.307–0.422	158	0.253	0.187–0.328	123	0.504	0.412–0.595
	Total	919	0.251	0.224–0.281	428	0.173	0.138–0.212	491	0.320	0.279–0.363
Razi Center	Ischemic	995	0.016	0.009–0.026	427	0.007	0.001–0.020	568	0.023	0.012–0.039
	Hemorrhagic	76	0.026	0.003–0.092	40	0.000	0.000–0.088	36	0.056	0.007–0.187
	Total	1,071	0.017	0.010–0.026	467	0.006	0.001–0.019	604	0.025	0.014–0.041
Both centers	Ischemic	1,633	0.089	0.075–0.104	697	0.053	0.038–0.072	936	0.115	0.096–0.138
	Hemorrhagic	357	0.291	0.245–0.341	198	0.202	0.148–0.265	159	0.403	0.326–0.483
	Total	1,990	0.125	0.111–0.140	895	0.086	0.068–0.106	1,095	0.157	0.136–0.180

Abbreviations: CFP, case-fatality proportion; NAP, number of admitted patients.

Table 4 Results from TSR of multiple regression analysis to determine independent predictors of in-hospital stroke mortality

Survival predictors	Hazard ratio	p-value	95% CI
Age ≥65 years	1.55	0.002	1.18–2.05
Admission NIHSS
Admission mRS	2.30	<0.001	1.80–2.93
Admission GCS	0.87	<0.001	0.83–0.92
Hemorrhagic stroke	1.55	0.002	1.17–2.05
Diabetes	1.49	0.008	1.11–2.00
Valvular heart disease	2.57	0.04	1.04–6.35
Aspiration pneumonia	1.47	0.018	1.07–2.01

Abbreviations: GCS, Glasgow Coma Scale; mRS, modified Rankin Scale; NIHSS, National Institute of Health Stroke Scale; TSR, Tabirz Stroke Registry.

Figure 1 Mean scores of mRS and GCS at admission time compared for different variables.

Abbreviations: GCS, Glasgow Coma Scale; mRS, modified Rankin Scale.

Figure 2 Kaplan–Meier survival estimates according to stroke type and age group among hospitalized stroke patients in Tabriz, Iran.