About Us

TACIT is currently under development by a working group of clinical research methodologists, content experts, trialists, medical journal editors and researchers with industry experience. TACIT is developed under the auspices of the Cochrane Bias Methods Group.


TACIT development is informed by TACIT research projects and a preliminary version of the tool has been  user tested in 2022-3 (see below for additional details).  A public version of the tool is expected to be released in summer 2024.


The TACIT website will feature updates about TACIT development and relevant publications.


TACIT Steering group members

Andreas Lundh

Asbjørn Hróbjartsson

Isabelle Boutron

Lesley Stewart



TACIT Working group members

Alastair Matheson

Angela Webster

An-Wen Chan

Brett Thombs

Elie Akl

Erick Turner

Holger Schünemann

Jesse Berlin

Jonathan Sterne

Julian Higgins

Kerry Dwan

Lisa Bero

Matthew Page

Rachel Richardson

Tom Jefferson

Wim Weber

TACIT development history and expected timeline

Autumn 2015

TACIT Steering Group established

Spring 2016

TACIT Working Group established

Summer 2016

Framework document drafted

Spring 2017

Final framework document approved

Summer 2017

Protocol for TACIT1 research project developed

Autumn 2017

Protocol for TACIT2 research project developed

Autumn 2018

Pilottesting of preliminary version of TACIT

Spring 2019

Prototype version of TACIT developed

Summer 2019-20

Revision of TACIT

Winter 2020

Protocol for TACIT3 research project developed

Winter 2021 to Spring 2023

User testing of TACIT prototype (TACIT4 research project)

Summer 2023 to Spring 2024

Revision of TACIT based on user testing and working group feedback

Spring 2024

TACIT Working Group online meeting and final revision of tool

Summer 2024

Public release of TACIT 1.0