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Statistical analysis plan for the 5-year and 10-year follow-up assessments of the FIDELITY trial

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published version
Date
2020
Author(s)
Sihvonen, Raine
Kalske, Roope
Englund, Martin
Turkiewicz, Aleksandra
Toivonen, Pirjo
Taimela, Simo
Järvinen, Teppo LN
the Finnish Degenerative Meniscal Lesion Study (FIDELITY) Investigators (incl. Paloneva, Juha)
Unique identifier
10.1186/s13063-019-3833-2
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Self-archived article

Citation
Sihvonen, Raine. Kalske, Roope. Englund, Martin. Turkiewicz, Aleksandra. Toivonen, Pirjo. Taimela, Simo. Järvinen, Teppo LN. the Finnish Degenerative Meniscal Lesion Study (FIDELITY) Investigators (incl. Paloneva, Juha). (2020). Statistical analysis plan for the 5-year and 10-year follow-up assessments of the FIDELITY trial.  Trials, 21 (1) , 76. 10.1186/s13063-019-3833-2.
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© The Authors 2020
Licensed under
CC BY http://creativecommons.org/licenses/by/4.0/
Abstract

Background
The research objectives of the 5-year and 10-year assessments in the Finnish degenerative meniscal lesion study (FIDELITY) are twofold: (1) to assess the long-term efficacy of arthroscopic partial meniscectomy (APM) in adults (age 35 to 65 years) with a degenerative meniscus tear and (2) to determine the respective effects of APM and degenerative meniscus tear on the development of radiographic and clinical knee osteoarthritis (OA).

Methods and design
FIDELITY is an ongoing multi-center, randomized, participant and outcome assessor blinded, placebo-surgery-controlled trial in 146 patients. This statistical analysis plan (SAP) article describes the overall principles for analysis of long-term outcomes (5-year and 10-year follow up), including how participants will be included in each analysis, the primary and secondary outcomes and their respective analyses, adjustments for covariates, and the presentation of the results. In addition, we will present the planned sensitivity and subgroup analyses.

Discussion
To assess the long-term efficacy of APM on knee symptoms and function we are carrying out a long-term (5-year and 10-year) follow up of our placebo-surgery-controlled FIDELITY trial according to statistical principles outlined in detail in this document. As our second primary objective, whether APM (resection of torn meniscus tear) accelerates or delays the development of knee osteoarthritis in patients with an arthroscopically verified degenerative tear of the medial meniscus, a pre-registered follow-up is also carried out.

URI
https://erepo.uef.fi/handle/123456789/8220
Link to the original item
https://doi.org/10.1186/s13063-019-3833-2
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