1. Cardiff University University Hospital of Wales and College of Medicine, , Cardiff CF14 4XW , UK
2. Royal College of Physicians Falls and Fragility Fracture Audit Programme, , London NW1 4LE , UK
3. Nottingham University Hospital Department of Health Care of Older People, , Nottingham NG7 2UH , UK
4. Beaumont Hospital , Dublin 9 , Ireland
5. NHS Grampian , Aberdeen Royal Infirmary, Aberdeen, AB25 2ZN , UK
6. University of Edinburgh Ageing and Health Research Group, , Edinburgh EH9 3EG , UK
7. Scottish Hip Fracture Audit (SHFA) , Edinburgh , UK
8. University of Oxford Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science (NDORMS), , Oxford OX3 7HE , UK
9. Cork University Hospital and University College Cork , Cork , Ireland
10. Health Service Executive , Dublin 8D08 W2A8 , Ireland
11. Irish Hip Fracture Database (IHFD) , National Office of Clinical Audit, Dublin 2, D02 VN51 , Ireland
12. University of Bristol Musculoskeletal Research Unit, Bristol Medical School, , Bristol BS10 5NB , UK
13. Royal United Hospital NHS Trust Older Persons Unit, , Combe Park, Bath BA1 3NG , UK