Review Article
Selenium Level in Patients with Vitiligo: A Meta-Analysis
Table 1
Characteristics of the 8 studies included for meta-analysis.
| Study/year | Country | Skin type | Sample | Age, (range) | Vitiligo/control | Type/stage | Case | Control | Uni/methods | NOS score |
| Teherani and Nagy-Vezekenyi [24] | Austria | NA | Blood | (9-16) | 5/8 | 10-25% body surface | | | μg/g dry weight neutron activation analysis | 4 | Tu et al. [26] | China | NA | Serum | 29.1 (18-51) | 29/37 | Localized 13 Segmental 5 Generalized 11 | | | μg/L fluorescence spectrophotometry | 7 | Beazley et al. [19] | Germany | II (n.5) III (n.53) IV (n.3) | Serum | 38.9 () | 61/5932 | Vulgaris 44 Acrofacial 13 Segmental 2 Focal form 1 Totalis 1 (2 active stages) | | | μmol/L atomic absorption spectrophotometry | 6 | Kang et al. [27] | China | Dark-skinned patients | Serum | (3-64) | 30/34 | 3 m-30 y | | | mg/L | 5 | Ozturk et al. [25] | Turkey | NA | Plasma | (16-43) | 30/30 | Generalized Stable | | | Ppb fluorescence spectrophotometer | 7 | Barikbin et al. [17] | Iran | III or IV | Serum | 31.8 (9-82) | 60/45 | Vulgaris | | | μmol/L flameless atomic absorption method | 6 | Zhao et al. [28] | China | II | Serum | (3-65) | 36/16 | Active 18/stable 18 Localized 16 Generalized 17 Scattered 2 Segmental 1 | | | ng/L | 6 | Wacewicz et al. [18] | Poland | NA | Serum | (21-73) | | Generalized | | | μg/L electrothermal atomic absorption spectrometry method | 7 |
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