PMID- 29523985 OWN - NLM STAT- MEDLINE DCOM- 20190314 LR - 20190314 IS - 1432-0932 (Electronic) IS - 0940-6719 (Linking) VI - 27 IP - 7 DP - 2018 Jul TI - Response rate does not affect patient-reported outcome after lumbar discectomy. PG - 1538-1546 LID - 10.1007/s00586-018-5541-0 [doi] AB - PURPOSE: Quality registers give unique possibilities to achieve information from large groups of patients, but outcome must be interpreted carefully due to less stringent data collection and lower follow-up rates than in research projects. We tried to quantify any outcome differences between a national spine quality register and a prospective observational study. METHODS: Adult patients treated with lumbar discectomy between 2004 and 2010 were retrieved from the Swedish Spine register (Swespine) (n = 7791) and from the single center lumbar disc herniation study (LDHS) in Stockholm (n = 177). The mean follow-up rates at 1 and 2 years were 73 and 62%, compared to 98 and 99%, respectively. Patient-reported outcome measurements included VAS for back and leg pain, ODI, EQ-5D, patient satisfaction, and global assessment. RESULTS: When comparing the two cohorts at baseline, there were minor differences in the patient-reported outcome measurements, all within reported minimal clinical important differences (MCID). Mean outcome improved significantly in both groups after surgery. All outcomes at 1 and 2 years were similar and within the reported MCID in both groups. Complications and reoperations were similar, except for more surgical site infections in the LDHS group. CONCLUSIONS: Higher response rates than seen in Swespine are not needed to achieve reasonably representative data on patient-reported outcome for large cohorts. Two-year data do not seem to add additional information. These slides can be retrieved under Electronic Supplementary Material. FAU - Elkan, P AU - Elkan P AD - Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, 141 86, Stockholm, Sweden. AD - Department of Clinical Sciences, Sodersjukhuset, Karolinska Institutet, Stockholm, Sweden. AD - Department of Orthopaedics, Sodersjukhuset, Stockholm, Sweden. FAU - Lagerback, T AU - Lagerback T AD - Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, 141 86, Stockholm, Sweden. FAU - Moller, H AU - Moller H AD - Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, 141 86, Stockholm, Sweden. AD - Department of Orthopaedics, Karolinska University Hospital, 141 86, Stockholm, Sweden. FAU - Gerdhem, Paul AU - Gerdhem P AUID- ORCID: 0000-0001-8061-7163 AD - Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, 141 86, Stockholm, Sweden. paul.gerdhem@sll.se. AD - Department of Orthopaedics, Karolinska University Hospital, 141 86, Stockholm, Sweden. paul.gerdhem@sll.se. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180309 PL - Germany TA - Eur Spine J JT - European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society JID - 9301980 SB - IM MH - Adult MH - *Diskectomy/adverse effects/statistics & numerical data MH - Humans MH - Lumbar Vertebrae/*surgery MH - *Patient Reported Outcome Measures MH - Patient Satisfaction/statistics & numerical data MH - Sweden/epidemiology OTO - NOTNLM OT - Lumbar disc herniation OT - Outcome OT - Response rate OT - Surgery EDAT- 2018/03/11 06:00 MHDA- 2019/03/15 06:00 CRDT- 2018/03/11 06:00 PHST- 2017/11/02 00:00 [received] PHST- 2018/02/27 00:00 [accepted] PHST- 2018/02/10 00:00 [revised] PHST- 2018/03/11 06:00 [pubmed] PHST- 2019/03/15 06:00 [medline] PHST- 2018/03/11 06:00 [entrez] AID - 10.1007/s00586-018-5541-0 [pii] AID - 10.1007/s00586-018-5541-0 [doi] PST - ppublish SO - Eur Spine J. 2018 Jul;27(7):1538-1546. doi: 10.1007/s00586-018-5541-0. Epub 2018 Mar 9.