Table 1 Details of included studies
Study | Location | Sample size | Male gender | Age (years) | HTN (%) | DM (%) | Current smokers (%) | HL (%) | Sample time | Cut-off of RDW | Method of determination of cut-off | % with high RDW | Treatment | Follow-up | NOS score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ani 2009[14] | USA | 480 | 228 | NR | 63.4 | 25.4 | 22.4 | 73.8 | NR | 13.9 | Pre-determined | 23.8 | NR | 75 months | 7 |
Kim 2012[15] | Korea | 847 | 507 | 65.9 | 72.4 | 29.4 | 24.8 | 21.1 | On admission | NR | NR | NR | AP, IVT | 3 months | 7 |
Turcato 2017[16] | Italy | 837 | NR | 77 | NR | NR | NR | NR | On admission | 13 | ROC curve | NR | AP, IVT | 3 months | 8 |
Pinho 2018[17] | Portugal | 602 | 257 | 60.5–80 | 68.4 | 20.8 | NR | 43.9 | On admission | 14 | Pre-determined | 23.1 | IVT | 1 year | 8 |
Chen 2019[25] | Taiwan | 3956 | NR | NR | NR | NR | NR | NR | On admission | 14.5 | Pre-determined | 13.6 | NR | Up to 5 years | 8 |
Gunes 2020[26] | Turkey | 204 | 82 | NR | 78.9 | 34.8 | NR | 26.9 | On admission | NR | NR | NR | NR | In-hospital | 8 |
Wang 2020[27] | China | 1558 | 838 | 66.2 | 57.5 | 21.1 | 24 | 7.8 | Within 24 h | 14 | ROC curve | 36.2 | AP, IVT, ET | 3 months | 7 |
Ye 2020[28] | China | 480 | 300 | 71 | 76.3 | 27.9 | NR | 37.7 | On admission | 14.6 | ROC curve | NR | IVT | 1 year | 8 |
Zhao 2020[30] | China | 2646 | NR | NR | NR | NR | NR | NR | Within 24 h | 14.3 | Pre-determined | NR | NR | 1 year | 8 |
Akpinar 2021[29] | Turkey | 205 | 110 | 63.7 | 82 | 31.7 | 17 | NR | On admission | 16 | Pre-determined | 19 | ET | 3 months | 8 |
Kim 2021[20] | Korea | 240 | 131 | 72 | 63.8 | 28.3 | NR | 18.3 | On admission | 12.8 | ROC curve | NR | IVT | 3 months | 7 |
Guan 2022[21] | China | 1576 | NR | 63.2 | 74.9 | 32 | NR | NR | Within 24 h | NR | NR | NR | AP | 1 year | 7 |
Wang’ 2020[22] | China | 102 | 57 | 70 | 51.9 | 13.7 | 10.7 | 8.8 | On admission | 13.05 | ROC curve | NR | ET | 1 year | 8 |
Xue 2022[23] | China | 629 | 403 | 70 | 78.4 | 33.2 | 45.3 | 3.5 | Within 24 h | 13.4 | Pre-determined | 23 | AP, IVT, ET | 3 months | 9 |
Li 2023[24] | China | 606 | 362 | 84.6 | 81 | 24.8 | 5.6 | 72.8 | Within 24 h | 13.8 | Pre-determined | 68.4 | NR | In-hospital | 7 |