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Quality of systematic reviews of the Foods with Function Claims (FFC, Kinosei-Hyoji-Shokuhin) in Japan: comparative before- and after- evaluation on the verification reports by the Consumer Affairs Agency (CAA)

Quality of systematic reviews of the Foods with Function Claims (FFC, Kinosei-Hyoji-Shokuhin) in Japan: comparative before- and after- evaluation on the verification reports by the Consumer Affairs Agency (CAA) - Quality of systematic reviews of the Foods with Function Claims

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000029821
Enrollment
1000
Registered
2017-11-04
Start date
2017-09-25
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

This study will be a review based on systematic reviews (SRs). The study will be restricted to all original SRs of healthy adults.

Interventions

None listed

Sponsors

Faculty of Regional Environment Science, Tokyo University of Agriculture
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Studies will be eligible if they are SRs based on the FFC registered at the CAA website. We will search the database from 1 April, up to 31 October, 2015 as the pre-SR and from 1 July, 2017 up to 31 January, 2018 as the post-SR. Actually, the pre-SR was evaluated by the CAA according to the PRISMA checklist and our research group (FFC-SR2) according to the AMSTAR checklist. We will make use of each statistical data as results of pre-evaluation. Furthermore, we will add an evaluation by the AMSTAR 2 that was developed newly.

Exclusion criteria

Exclusion criteria: We will exclude SRs based on observational studies such as cohort study and case-control study. We will exclude SRs of the same content registered in order to submit any other final products on a post SR. And we will also exclude only a minor-revised SR for an original SR on the pre-.

Design outcomes

Primary

MeasureTime frame
We will evaluate each SR by the AMSTAR checklist (Shea BJ, et al., 2007) and the AMSTAR 2 (Shea BJ, et al., 2017) on methodological quality and the PRISMA checklist (Liberate A, et al., 2009) on reporting quality, respectively.

Countries

Japan

Contacts

Public ContactHiroharu Kamioka

Tokyo University of Agriculture Faculty of Regional Environment Science

h1kamiok@nodai.ac.jp03-5477-2587

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026