Hypothyroidism is a risk factor for transient ischemic attack: A meta-analysis

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Figure 1
- Schematic illustration of literature search and screening process.
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Figure 2
- Meta-analysis of clinical hypothyroidism and transient ischemic attack. A) Total; B) study type subgroup analysis.^12-18
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Figure 3
- Meta-analysis of subclinical hypothyroidism and transient ischemic attack.^12-18
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Figure 4
- Sensitivity analysis. A) All studies; B) hypothyroidism subgroup; and C) subclinical hypothyroidism group.^12-18
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Figure 5
- Publication bias funnel plot.

Table 1

- Basic characteristics of the included studies.

Authors	Years	Designs	Countries	Age		Gender (male/female)		Sample sizes		Quality scores
Authors	Years	Designs	Countries	Hypothyroidism	Euthyroidism	Hypothyroidism	Euthyroidism	Hypothyroidism	Euthyroidism	Quality scores
Drechsler et al¹⁴	2014	cohort study	German	66.4±8.8	65.3±8.5	10/6	446/335	16	781	8
Karch et al¹⁶	2014	cohort study	UK	59.8	57.0	6472/28435	29817/119815	34907	149632	9
Karakurm et al¹⁵	2007	cohort study	Turkish	67.2±1	68.4±11	109/140	53/49	10	341	7
Schultz et al¹⁸	2011	cohort study	Denmark	69.5	67.5	5/26	243/306	31	549	9
Rodondi et al¹⁷	2005	cohort study	US	74.8±2.7	74.7±2.9	151/187	1188/1204	338	2392	8
Dorr et al¹³	2008	cross-sectional study	Pomerania	64.00	61.0	129/97	1010/829	226	1839	9
Benwenga et al¹²	2019	cross-sectional study	Italy	65.6±12.7		14/100		47	9	6