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Special Issue: Improving coordination of international aphasia research

Utilising a systematic review-based approach to create a database of individual participant data for meta- and network meta-analyses: the RELEASE database of aphasia after stroke

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Pages 513-533 | Received 17 Aug 2020, Accepted 28 Jan 2021, Published online: 08 Oct 2021

Figures & data

Figure 1. PRISMA flow diagram: Eligible database identification and contribution.

Figure 1. PRISMA flow diagram: Eligible database identification and contribution.

Table 1. RELEASE database participant descriptors

Table 2. Data availability for language outcomes

Table 3. Overall language ability assessment tools (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report, or unavailable

Table 4 a.Naming assessments (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table b.Other spoken language assessments (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 5. Auditory comprehension assessments (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 6 a.Reading comprehension and writing assessments (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 6 b.Reading comprehension and writing assessments (at baseline) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 7 a.Functional Communication (observer-rated) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 7 b.Functional Communication (self-rated) included in RELEASE – Datasets and IPD where measure is reported, available, missing from report or unavailable

Table 8. Speech and language therapy (SLT) Interventions in the RELEASE dataset

Table 9. Significant and non-significant results reported, by participant number

Figure 2. Randomised controlled trials included in the RELEASE database and risk of bias.

Figure 2. Randomised controlled trials included in the RELEASE database and risk of bias.

Data availability statement & Data deposition

Contributing trialists who have granted permission for extended use of their datasets beyond RELEASE have deposited their data in the Collaboration of Aphasia Trialists’ (CATs) Aphasia Resource (available at https://www.aphasiatrials.org/aphasia-dataset/).