Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study
Objective This cohort study evaluates the unknown age-specific and gender-specific incidence of primary shoulder dislocations in the UK.Setting UK primary care data from the Clinical Practice Research Datalink (CPRD) were used to identify patients aged 16–70 years with a shoulder dislocation during...
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| Format: | Article |
| Language: | English |
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BMJ Publishing Group
2017-11-01
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| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/7/11/e016112.full |
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| author | Gary S Collins Sarah E Lamb Sally Hopewell Daniel Prieto-Alhambra Andrew Judge Amar Rangan Andrew J Carr Jonathan L Rees Nigel K Arden Katherine Edwards Tim A Holt Anjali Shah Antonella Delmestri Rafael A Pinedo-Villanueva |
| author_facet | Gary S Collins Sarah E Lamb Sally Hopewell Daniel Prieto-Alhambra Andrew Judge Amar Rangan Andrew J Carr Jonathan L Rees Nigel K Arden Katherine Edwards Tim A Holt Anjali Shah Antonella Delmestri Rafael A Pinedo-Villanueva |
| author_sort | Gary S Collins |
| collection | DOAJ |
| description | Objective This cohort study evaluates the unknown age-specific and gender-specific incidence of primary shoulder dislocations in the UK.Setting UK primary care data from the Clinical Practice Research Datalink (CPRD) were used to identify patients aged 16–70 years with a shoulder dislocation during 1995–2015. Coding of primary shoulder dislocations was validated using the CPRD general practitioner questionnaire service.Participants A cohort of 16 763 patients with shoulder dislocation aged 16–70 years during 1995–2015 were identified.Primary outcome measure Incidence rates per 100 000 person-years and 95% CIs were calculated.Results Correct coding of shoulder dislocation within CPRD was 89% (95% CI 83% to 95%), and confirmation that the dislocation was a ‘primary’ was 76% (95% CI 67% to 85%). Seventy-two percent of shoulder dislocations occurred in men. The overall incidence rate in men was 40.4 per 100 000 person-years (95% CI 40.4 to 40.4), and in women was 15.5 per 100 000 person-years (95% CI 15.5 to 15.5). The highest incidence was observed in men aged 16–20 years (80.5 per 100 000 person-years; 95% CI 80.5 to 80.6). Incidence in women increased with age to a peak of 28.6 per 100 000 person-years among those aged 61–70 years.Conclusions This is the first time the incidence of shoulder dislocations has been studied using primary care data from a national database, and the first time the results for the UK have been produced. While most primary dislocations occurred in young men, an unexpected finding was that the incidence increased in women aged over 50 years, but not in men. The reasons for this are unknown. Further work is commissioned by the National Institute for Health Research to examine treatments and predictors for recurrent shoulder dislocation.Study registration The design of this study was approved by the Independent Scientific Advisory Committee (15_260) for the Medicines & Healthcare products Regulatory Agency. |
| format | Article |
| id | doaj-art-0f0fb04d07d645f4836e5db13bb98453 |
| institution | Kabale University |
| issn | 2044-6055 |
| language | English |
| publishDate | 2017-11-01 |
| publisher | BMJ Publishing Group |
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| series | BMJ Open |
| spelling | doaj-art-0f0fb04d07d645f4836e5db13bb984532025-02-02T00:15:12ZengBMJ Publishing GroupBMJ Open2044-60552017-11-0171110.1136/bmjopen-2017-016112Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort studyGary S Collins0Sarah E Lamb1Sally Hopewell2Daniel Prieto-Alhambra3Andrew Judge4Amar Rangan5Andrew J Carr6Jonathan L Rees7Nigel K Arden8Katherine Edwards9Tim A Holt10Anjali Shah11Antonella Delmestri12Rafael A Pinedo-Villanueva13professorFaculty of Health and Life Sciences, University of Exeter, Exeter, UKprofessor of clinical trials and evidence synthesisPharmaco- and Device Epidemiology Group, Health Data Sciences, Botnar Research Centre, NDORMS, University of Oxford, Oxford, UK4 Musculoskeletal Research Unit, University of Bristol, Bristol, UK4 Department of Health Sciences, University of York, York, Yorkshire, UKNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UKprofessor of orthopaedic surgery and musculoskeletal science and head of departmentNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK1 Patient Safety Collaborative, Oxford Academic Health Sciences Network, Oxford, UKDepartment of Primary Care Health Sciences, Oxford University, Oxford, UKNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UKPharmaco- and Device Epidemiology Group, Health Data Sciences, Botnar Research Centre, NDORMS, University of Oxford, Oxford, UKNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UKObjective This cohort study evaluates the unknown age-specific and gender-specific incidence of primary shoulder dislocations in the UK.Setting UK primary care data from the Clinical Practice Research Datalink (CPRD) were used to identify patients aged 16–70 years with a shoulder dislocation during 1995–2015. Coding of primary shoulder dislocations was validated using the CPRD general practitioner questionnaire service.Participants A cohort of 16 763 patients with shoulder dislocation aged 16–70 years during 1995–2015 were identified.Primary outcome measure Incidence rates per 100 000 person-years and 95% CIs were calculated.Results Correct coding of shoulder dislocation within CPRD was 89% (95% CI 83% to 95%), and confirmation that the dislocation was a ‘primary’ was 76% (95% CI 67% to 85%). Seventy-two percent of shoulder dislocations occurred in men. The overall incidence rate in men was 40.4 per 100 000 person-years (95% CI 40.4 to 40.4), and in women was 15.5 per 100 000 person-years (95% CI 15.5 to 15.5). The highest incidence was observed in men aged 16–20 years (80.5 per 100 000 person-years; 95% CI 80.5 to 80.6). Incidence in women increased with age to a peak of 28.6 per 100 000 person-years among those aged 61–70 years.Conclusions This is the first time the incidence of shoulder dislocations has been studied using primary care data from a national database, and the first time the results for the UK have been produced. While most primary dislocations occurred in young men, an unexpected finding was that the incidence increased in women aged over 50 years, but not in men. The reasons for this are unknown. Further work is commissioned by the National Institute for Health Research to examine treatments and predictors for recurrent shoulder dislocation.Study registration The design of this study was approved by the Independent Scientific Advisory Committee (15_260) for the Medicines & Healthcare products Regulatory Agency.https://bmjopen.bmj.com/content/7/11/e016112.full |
| spellingShingle | Gary S Collins Sarah E Lamb Sally Hopewell Daniel Prieto-Alhambra Andrew Judge Amar Rangan Andrew J Carr Jonathan L Rees Nigel K Arden Katherine Edwards Tim A Holt Anjali Shah Antonella Delmestri Rafael A Pinedo-Villanueva Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study BMJ Open |
| title | Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study |
| title_full | Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study |
| title_fullStr | Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study |
| title_full_unstemmed | Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study |
| title_short | Incidence of shoulder dislocations in the UK, 1995–2015: a population-based cohort study |
| title_sort | incidence of shoulder dislocations in the uk 1995 2015 a population based cohort study |
| url | https://bmjopen.bmj.com/content/7/11/e016112.full |
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