Table 2.
Characteristics of included studies investigating the vitamin D level in different types of systemic sclerosis patients or studies investigating the correlation of vitamin D with the clinical characteristics of SSc patients
| Study | Publication time | Country | Sample size (diffuse/limited type) | Vitamin D level (diffused/limited type) | Clinical characteristics | Cutoff value for vitamin D |
|---|---|---|---|---|---|---|
| Groseanu et al20 | 2016 | Romania | 51 (27/24) | 15.92±9.1/22.05±10.8 | Rodnan score, ulcer, pulmonary, sPAP | 10< insufficiency <30 (n=34), deficiency <10 (n=12) |
| Corrado et al15 | 2015 | Italy | 64 (31/33) | 11.53±7.46/19.22±11.13 | Rodnan score | 10< insufficiency <30 (n=36), deficiency <10 (n=22) |
| Arnson et al17 | 2011 | Israel | 125 (35/90) | 13.0±7.0/14.3±11.2 | NA | NA |
| Caramaschi et al19 | 2010 | Italy | 65 (NA) | NA | Rodnan score, ulcer, pulmonary, sPAP | 10< insufficiency <30 (n=43), deficiency <10 (n=19) |
Note: Vitamin D level data presented as mean ± SD.
Abbreviations: NA, not available; sPAP, systolic pulmonary artery pressure; SSc, systemic sclerosis.