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Table 2 Alternative consensus definitions

From: Development of core outcome sets of Food for Special Medical Purposes designed for type 2 diabetes mellitus: a study protocol

Category

Added/retained

Deleted directly

Deleted indirectly

Round 1

≥ 2 stakeholders agree to add

≥ 2 unqualified scales among M, FR, CV

POR ≥ 10%

≥ 2 unqualified scales among M, FR, CV, POR, PIMR, PIDR

M ≤ 60% of the full mark or FR ≤ 0.2 in round 1

< 2 unqualified scales among M, FR, CV, POR, PIMR, and PIDR

< 2 stakeholders advise to delete

Action 1

Outcome added for R2

Outcome discarded before R2

Outcome discarded before R2 (require expert panel’s approval), otherwise retained for R2

Round 2

Not allowed to newly add outcomes

≥ 2 unqualified scales among M, FR, CV

POR ≥ 10%

≥ 2 unqualified scales among M, FR, CV, POR, PIMR, PIDR

M ≤ 80% of the full mark or FR ≤ 0.3 in R2

< 2 unqualified scales among M, FR, CV, POR, PIMR, PIDR

< 2 stakeholders advise to delete

Action 2

Null

Outcome discarded before consensus meeting

Outcome discarded before consensus meeting (require expert panel’s approval), otherwise retained for consensus meeting

Consensus meeting

All stakeholder group score as critical (7–9 points) ≥ 70% and not important (1–3 points) < 15%

Any stakeholder group score not important (1–3 points) by ≥ 70% and critical (7–9 points) by < 15%

Neither criterion of consensus in nor out are met

Action 3

Outcome retained

Outcome deleted

Outcomes retained for the next consensus meeting

  1. M arithmetic mean, FR full ratio, CV coefficient of variation, POR poor operability ratio, PIMR poor importance ratio, PIDR poor independence ratio