Browsing by Author "Olsson, Harald"

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    A Non-Response Study 24-months Following Hip Arthroscopy
    (2020-04-24) Olsson, Harald; University of Gothenburg / Institute of Medicine; Göteborgs universitet / Institutionen för medicin
    Title: A Non-Response Study 24-months following Hip Arthroscopy. Author, year: Harald Olsson, 2019. Supervisor: Mikael Sansone. Institution: Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg. Background: Clinics in Gothenburg, Sweden, have since 2011 documented the patient reported outcome measures (PROMs) in a local Hip Arthroscopy Registry in order to evaluate different subgroups, improve diagnostics and further refine treatments. PROMs are collected pre-operatively and with a follow-up time of 1, 2 respectively 5 years post-surgery. One of the main concerns of registry studies is the loss to followup as the proper evaluation of data obtained from a registry require a high response rate. The accepted percentage of Non- response could be anywhere from 20% to 60%, which is dependent on the level of Non-response bias. Aim: The primary aim of this study is to compare potential outcome differences between the Responders and the Late-responders. The secondary aim is to compare baseline characteristics. Methods: Prospective observational study of registry data. All 503 (397 Responders and 107 Nonresponders) participants underwent Hip Arthroscopy in 2015 and/or 2016 due to Hip pain. Non-responders were contacted during July 2019 and encouraged to participate in this study, which includes comparisons of Baseline characteristics and Clinical outcomes at Follow-up. Results: There were no differences in The Copenhagen Hip and Groin Outcome Score, The International Hip Outcome Tool-12, European Quality of life-5 domains-5 levels, Hip function-Visual analogue scale. However, Late-responders were 16.5% (95% CI: -26.6, -6,4) less satisfied with their operation. This study found four significant differences in baseline characteristics: 1) The Late-responders were 4.10 years younger (95% confidence interval (CI): 1.51, 7.12) 2) Konan type 1b cartilage lesion: Responders 1.7% (95% CI: 0.8, 3.1) versus Late-responders 5.1% (95% CI: 2.2, 9.7) 3) Hip sports activity scale-before symptom onset: Responders 5.40 (95% CI: 5.21, 5.49) versus Late-responders 5.92 (95% CI: 5.53, 6.32) 4) Hip sports activity scale-during adolescence: Responders 5.80 (95% CI: 5.61, 5.99) versus Lateresponders 6.42 (6.08, 6.76). There were no significant differences in body mass index, sex, pathologies, symptom duration, Hip sports activity scale-at surgery or other chondral lesions. Conclusion: The Late-responders have comparable outcomes to that of the Responders. Some baseline characteristics suggest that the Late-responders might differ from the Responders.