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Table 3 Risk of bias assessment of included studies according to the CONSORT Checklist

From: Effect of vitamin D supplementation on cardiac-metabolic risk factors in elderly: a systematic review and meta-analysis of clinical trials

Item Cynthia
El Hajj, 2019
Cynthia
El Hajj, 2020
Ghada El-Hajj Fuleihan, 2017 Zahra Hoseini, 2020 Ilkin Naharci, 2012 Kim, Hyoung-Jun, 2014 Krzysztof Prusik,
2018
Sylwia Wenclewska, 2019 M. D. Witham,
2010
M.D. Witham,
2012
Adrian D. Wood,
2012
1a Yes Yes Yes Yes No No Yes Yes Yes Yes Yes
1b Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
2a Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes
2b Yes Yes Yes Yes Yes Yes Yes No Yes Yes No
3a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
3b No No No No No No No No No No No
4a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
4b Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
5 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
6a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
6b No No No No No No No No Yes No No
7a Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes
7b Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
8a Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes
8b No No No No No Yes Yes Yes No Yes Yes
9 Yes Yes No No No Yes Yes Yes Yes Yes Yes
10 Yes Yes No No No Yes No No No Yes Yes
11a Yes Yes No No No No No No No Yes Yes
11b No No No No No No No No No Yes Yes
12a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
12b Yes No No No No No No Yes No Yes Yes
13a Yes Yes Yes Yes No No No No Yes Yes Yes
13b Yes Yes Yes Yes No No No No Yes Yes Yes
14a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
14b No No No No No No No No No No Yes
15 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
16 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
17a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
17b Yes Yes No Yes No No No Yes No Yes Yes
18 No No Yes No Yes No No No Yes Yes No
19 No No Yes No Yes Yes Yes Yes Yes No Yes
20 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
21 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
22 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
23 Yes Yes Yes Yes No No Yes Yes Yes Yes Yes
24 Yes Yes No Yes No No No No Yes Yes Yes
25 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Total 30 29 26 23 21 23 25 26 29 33 33