| Ref ID | 929 |
| First Author | H. Kamioka |
| Journal | NUTRIENTS |
| Year Of Publishing | 2023 |
| URL | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180741/ |
| Keywords |
• Low methodological quality • Non-Cochrane reviews • Nutrition • Protocols |
| Problem(s) |
• Insufficient literature searches • Limited quality assessment or no risk of bias • Low reporting or methodological quality (OTHER GUIDANCE) • No registered or published protocol |
| Article Type | Empirical |
| Article Subtype | Cross-sectional survey/Methodological systematic review |
| First Author Country | Japan |
| Checklists |
• AMSTAR 2 |
| Aim | To assess the methodological quality (AMSTAR 2) of systematic reviews of foods with function claims (FFC) registered on the Consumer Affairs Agency website in Japan from 1 April to 31 October 2022. |
| Level of Investigation | Descriptive |
| Summary of Findings | From 40 included systematic reviews of foods with function claims (FFC) randomly selected from the Consumer Affairs Agency website in Japan from 1 April to 31 October 2022. Overall confidence was rated as “high” (N = 0, 0%), “moderate” (N = 0, 0%), “low” (N = 2, 5%), or “critically low” (N = 38, 95%). The mean AMSTAR 2 score was 51.1% (SD 12.1%; range 19–73%). Among the 40 systematic reviews, the number of critical domain deficiencies was 4 in 7.5% of systematic reviews, 3 in 52.5% of systematic reviews, 2 in 35% of systematic reviews, and 1 in 5% of systematic reviews. Registering the review’s protocol and comprehensive search strategies were particularly common deficiencies. Additionally, the risk of bias (RoB) was insufficiently considered. |
| Number of systematic reviews included | 40 |
| Number of eligible systematic reviews assessed | 519 |
| Treatment impacted | No |
| Treatment impacted description | |
| Interpretation impacted | Not Applicable |
| Interpretation impacted description |