The effect of macronutrient and micronutrient supplements on COVID-19: an umbrella review

Table 2 Cochrane’s ROBIS quality assessment tool

Reference	Phase 2				Phase 3
Reference	1. Study eligibility criteria	2. Identification and selection of studies	3. Data collection and study appraisal	4. Synthesis and findings	Risk of bias in the review
[13]	✓	✓	✓	✓	✓
[14]	✓	✓	✓	✓	✓
[15]	×	✓	✓	✓	×
[16]	✓	✓	✓	✓	✓
[17]	✓	✓	✓	✓	✓
[18]	✓	✓	✓	✓	✓
[19]	✓	✓	✓	✓	✓
[20]	✓	✓	✓	✓	✓
[21]	✓	×	✓	×	✓
[22]	✓	✓	✓	✓	✓
[23]	✓	✓	✓	✓	✓
[24]	✓	✓	✓	✓	×
[25]	✓	✓	✓	✓	✓
[26]	✓	✓	✓	✓	✓
[27]	✓	×	✓	✓	✓
[28]	×	✓	✓	✓	✓
[29]	✓	✓	✓	✓	✓
[30]	✓	✓	✓	✓	✓
[31]	✓	✓	✓	✓	✓
[32]	✓	✓	✓	✓	×
[33]	✓	×	✓	✓	✓
[34]	✓	✓	✓	✓	✓
[35]	✓	✓	✓	✓	✓
[36]	✓	✓	✓	✓	✓
[37]	✓	✓	✓	×	✓
[38]	×	✓	✓	✓	✓
[39]	✓	✓	✓	✓	✓

ISSN: 2072-1315