Author Contributions: Dr Arts had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Brand, Koes, Peul.
Acquisition of data: Arts, Bartels.
Analysis and interpretation of data: Arts, Brand, van den Akker, Koes, Bartels, Peul.
Drafting of the manuscript: Arts, Bartels.
Critical revision of the manuscript for important intellectual content: Arts, Brand, van den Akker, Koes, Bartels, Peul.
Statistical analysis: Arts, Brand, van den Akker.
Obtained funding: Peul.
Administrative, technical or material support: Arts.
Study supervision: Koes, Peul.
Financial Disclosures: None reported.
Funding/Support: This study was funded by the Dutch Health Care Insurance Board.
Role of the Sponsor: The Dutch Health Care Insurance Board did not participate in the design and conduct of the study, in the collection, analysis, and interpretation of the data, or in the preparation, review, or approval of the manuscript.
Leiden-The Hague Spine Intervention Prognostic Study Group: Mark Arts (principal investigator), Ronald Brand, Wilbert van den Hout, Elske van den Akker, Bart Koes, Raph Thomeer, Wilco Peul (protocol and steering committee); Ronald Brand (statistical analysis); Marjon Nuyten, Petra Bergman, Gerda Holtkamp, Jaenneke Donkers, Saskia Dukker, Joyce Videler, Annemarie Mast, Lidwien Smakman, Marleen van Iersel, Marina Oosterhuis, Marjolein Scholten, Annette van den Berg, Arjan Nieborg, and Christi Waanders (research nurses and data collection).
Enrolling Physicians: Mark Arts, Fred Kloet, Wilco Peul, Rob Walchenbach, Hans Wurzer (Medical Center Haaglanden, the Hague); Rudy Kuiters, Carel Hoffmann (Haga Hospital, the Hague); Ronald Bartels, Tjemme Beems, Pieter Schutte (Canisius Wilhelmina Hospital, Nijmegen); Wee Fu Tan (Medical Center Alkmaar); Alof Dallenga (St Fransiscus Hospital, Rotterdam); Rob Walchenbach (Vlietland Hospital, Schiedam); Fred Kloet (Reinier de Graaf Hospital, Delft).
Additional Information: A video showing a tubular diskectomy and a conventional microdiskectomy is available at http://www.jama.com/cgi/content/full/302/2/149/DC1.
Additional Contributions: We thank the funders of the Dutch Health Insurance Board, the patients who participated, the recruiting physicians, Gail Bieger, BSc, for reviewing the manuscript, and the research nurses of the Sciatica research team for their work in making this trial possible. Ms Bieger received financial compensation for her work.