Table 4 Quality assessment of included randomized clinical trials using the NIH quality assessment tool
From: Effect of epigenetics on vitamin D levels: a systematic review until December 2020
Author, year | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | Quality rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chen et al., 2019 | Yes | No | Yes | Yes | No | Yes | NR | NR | Yes | NR | Yes | No | NR | Yes | Fair |
Zhou et al., 2014 | Yes | NR | NR | NR | NR | NR | Yes | Yes | Yes | NR | Yes | NR | Yes | No | Fair |