Advanced search
Publication Cover
Acta Orthopaedica Volume 82, 2011 - Issue 1
Journal homepage
1,613
Views
122
CrossRef citations to date
0
Altmetric
Research Article

Would loss to follow-up bias the outcome evaluation of patients operated for degenerative disorders of the lumbar spine?

A study of responding and non-responding cohort participants from a clinical spine surgery registry

Tore K Solberg Department of Neurosurgery, University Hospital of Northern Norway, Tromsø; Norwegian Registry for Spine Surgery (NORspine), Northern Norway Regional Health Authority, TromsøCorrespondence[email protected]
,
Andreas Sørlie Department of Neurosurgery, University Hospital of Northern Norway, Tromsø; Norwegian Registry for Spine Surgery (NORspine), Northern Norway Regional Health Authority, Tromsø
,
Kristin Sjaavik Department of Neurosurgery, University Hospital of Northern Norway, Tromsø; Norwegian Registry for Spine Surgery (NORspine), Northern Norway Regional Health Authority, Tromsø
,
Øystein P Nygaard Norwegian Registry for Spine Surgery (NORspine), Northern Norway Regional Health Authority, Tromsø; National Centre for Spinal Disorders and Department of Neurosurgery, University Hospital of St. Olav, Trondheim
&
Tor Ingebrigtsen Department of Neurosurgery, University Hospital of Northern Norway, Tromsø; Institute of Clinical Medicine, University of Tromsø, Norway
Pages 56-63 | Received 13 Jan 2010, Accepted 21 Sep 2010, Published online: 29 Dec 2010

  • Amundsen T, Weber H, Nordal HJ, Magnaes B, Abdelnoor M, Lilleas F. Lumbar spinal stenosis: conservative or surgical management?: A prospective 10-year study. Spine 2000; 25:1424-35.
  • Atlas SJ, Keller RB, Robson D, Deyo RA, Singer DE. Surgical and nonsurgical management of lumbar spinal stenosis: four-year outcomes from the maine lumbar spine study. Spine 2000; 25:556-62.
  • Burroughs TE, Waterman BM, Cira JC, Desikan R, Claiborne DW. Patient satisfaction measurement strategies: a comparison of phone and mail methods. Jt Comm J Qual Improv 2001; 27:349-61.
  • Dolan P. Modeling valuations for EuroQol health states. Med Care 1997; 35:1095-108.
  • Dolan P, Gudex C, Kind P, Williams A. The time trade-off method: results from a general population study. Health Econ 1996; 5:141-54.
  • Dripps R. New classification of physical status. Anesthesiology 1963; 24:111.
  • Edwards P, Roberts I, Clarke M, DiGuiseppi C, Pratap S, Wentz R, Kwan I. Increasing response rates to postal questionnaires: systematic review. BMJ 2002; 324: 1183.
  • Edwards P, Roberts I, Clarke M, DiGuiseppi C, Pratap S, Wentz R, Kwan I, Cooper R. Methods to increase response rates to postal questionnaires. Cochrane Database Syst Rev 2007;MR000008.
  • Etter JF, Perneger TV. Analysis of non-response bias in a mailed health survey. J Clin Epidemiol 1997; 50:1123-8.
  • Etter JF, Cucherat M, Perneger TV. Questionnaire color and response rates to mailed surveys. A randomized trial and a meta-analysis. Eval Health Prof 2002; 25:185-99.
  • Findlay GF, Hall BI, Musa BS, Oliveira MD, Fear SC. A 10-year follow-up of the outcome of lumbar microdiscectomy. Spine 1998; 23:1168-71.
  • Fritzell P, Stromqvist B, Hagg O. A practical approach to spine registers in Europe: the Swedish experience. Eur Spine J (Suppl 1) 2006; 15:S57-S63.
  • Gluud LL. Bias in clinical intervention research. Am J Epidemiol 2006; 163:493-501.
  • Harvey BJ, Wilkins AL, Hawker GA, Badley EM, Coyte PC, Glazier RH, Williams JI, Wright JG. Using publicly available directories to trace survey nonresponders and calculate adjusted response rates. Am J Epidemiol 2003; 158:1007-11.
  • Hollis S, Campbell F. What is meant by intention to treat analysis? Survey of published randomised controlled trials. BMJ 1999; 319:670-4.
  • Hunt JR, White E. Retaining and tracking cohort study members. Epidemiol Rev 1998; 20:57-70.
  • Kim J, Lonner JH, Nelson CL, Lotke PA. Response bias: effect on outcomes evaluation by mail surveys after total knee arthroplasty. J Bone Joint Surg (Am) 2004; 86:15-21.
  • Lachin JM. Worst-rank score analysis with informatively missing observations in clinical trials. Control Clin Trials 1999; 20:408-22.
  • Little R, Yau L. Intent-to-treat analysis for longitudinal studies with drop-outs. Biometrics 1996; 52:1324-33.
  • Ludemann R, Watson DI, Jamieson GG. Influence of follow-up methodology and completeness on apparent clinical outcome of fundoplication. Am J Surg 2003; 186:143-7.
  • McKean JW, Schrader RM. A comparison of methods for studentizing the sample mean. Commun Statist 1984; 13:751-73.
  • Murray DW, Britton AR, Bulstrode CJ. Loss to follow-up matters. J Bone Joint Surg (Br) 1997; 79:254-7.
  • Norquist BM, Goldberg BA, Matsen FA, III. Challenges in evaluating patients lost to follow-up in clinical studies of rotator cuff tears. J Bone Joint Surg (Am) 2000; 82:838-42.
  • Parker C, Dewey M. Assessing research outcomes by postal questionnaire with telephone follow-up. TOTAL Study Group. Trial of Occupational Therapy and Leisure. Int J Epidemiol 2000; 29:1065-9.
  • Roder C, Chavanne A, Mannion AF, Grob D, Aebi M. SSE Spine Tango—content, workflow, set-up. www.eurospine.org-Spine Tango. Eur Spine J 2005; 14:920-4.
  • Rubin DB, Schenker N. Multiple imputation in health-care databases: an overview and some applications. Stat Med 1991; 10:585-98.
  • Sackett DL, Richardson WS, Rosenberg W, Haynes RB. Evidence-based medicine: how to practice and teach EBM. Churchill Livingstone, Edinburgh 2000.
  • Schulz KF, Grimes DA. Sample size slippages in randomised trials: exclusions and the lost and wayward. Lancet 2002; 359:781-5.
  • Shih W. Problems in dealing with missing data and informative censoring in clinical trials. Curr Control Trials Cardiovasc Med 2002; 3:4.
  • Shih WJ, Quan H. Testing for treatment differences with dropouts present in clinical trials–a composite approach. Stat Med 1997; 16:1225-39.
  • Sims AC. Importance of a high tracing-rate in long-term medical follow-up studies. Lancet 1973; 2:433-5.
  • Sitzia J, Wood N. Response rate in patient satisfaction research: an analysis of 210 published studies. Int J Qual Health Care 1998; 10:311-7.
  • Solberg TK, Nygaard OP, Sjaavik K, Hofoss D, Ingebrigtsen T. The risk of “getting worse” after lumbar microdiscectomy. Eur Spine J 2005a; 14:49-54.
  • Solberg TK, Olsen JA, Ingebrigtsen T, Hofoss D, Nygaard OP. Health-related quality of life assessment by the EuroQol-5D can provide cost-utility data in the field of low-back surgery. Eur Spine J 2005b; 14:1000-7.
  • The EuroQol Group. EuroQol–a new facility for the measurement of health-related quality of life. The EuroQol Group. Health Policy 1990; 16:199-208.
  • Wildner M. Lost to follow-up. J Bone Joint Surg (Br) 1995; 77:657.
  • Wood AM, White IR, Thompson SG. Are missing outcome data adequately handled? A review of published randomized controlled trials in major medical journals. Clin Trials 2004; 1:368-76.

Related research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.