Table 1 Characteristics of included studies
From: Correlation of low serum vitamin-D with uterine leiomyoma: a systematic review and meta-analysis
Authors | Publication year | Country | Sample size (Case/Control) | Study design | Method of vitamin d assay | Age group (Control vs. case) | Quality assessment (score) | Reference |
|---|---|---|---|---|---|---|---|---|
Paffoni et al | 2013 | Italy | 128/256 | Case-control study | chemiluminescence | 37.8 ± 3.1, 37.8 ± 3.1 | 8 | [21] |
Sabry et al | 2013 | Egypt | 104/50 | Cross-sectional study | radioimmunoassay | 36.8 ± 3.4, 37.1 ± 2.9 | 8 | [25] |
Ciebiera et al | 2016 | Poland | 105/83 | Cohort study | ELISA | 42.4 ± 11.2, 42.9 ± 8.1 | 7 | [27] |
Ingala et al | 2016 | Congo | 216/216 | Case-control study | immunoradiometric assay (= radioimmunoassay) | 37.20 ± 12.36, 37.78 ± 8.22 | 8 | [22] |
Dawood et al | 2017 | Iraq | 34/30 | Case-control study | ELISA | 40–50 | 8 | [24] |
Oskovi Kaplan et al | 2017 | Turkey | 56/68 | Cross-sectional study | electrochemiluminescence immunoassay (ECLIA) | 39.84 ± 3.99, 38.25 ± 4.88 | 8 | [14] |
Ajmani et al | 2018 | India | 75/75 | Case-control studya | chemiluminescence assay | 38.6 ± 7.78, 36.79 ± 8.97 | 5 | [23] |
Singh et al | 2018 | India | 72/72 | Cross-sectional study | chemiluminescence immunoassay | 42.18 ± 5.37, 41.79 ± 4.91 | 4 | [26] |
Srivastava et al | 2019 | India | 45/45 | Cross-sectional study | Chemiluminescence | 38.47 ± 6.23, 38.27 ± 5.93 | 5 | [13] |