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    Publications

    1. Jordan KP, Rathod-Mistry T, van der Windt DA, Bailey J, Chen Y, Clarson L, Denaxas S, Hayward RA, Hemingway H, Kyriacou T, Mamas MA. Determining cardiovascular risk in patients with unattributed chest pain in UK primary care: an electronic health record study. Eur J Prev Cardiol. 2023 Mar 10:zwad055. doi: 10.1093/eurjpc/zwad055. Epub ahead of print. PMID: 36895179.
    2. Ashworth J, Bajpai R, Muller S, Bailey J, Helliwell T, Harrisson SA, Whittle R, Mallen CD. Trends in gabapentinoid prescribing in UK primary care using the Clinical Practice Research Datalink: an observational study. Lancet Reg Health Eur. 2023 Feb 13;27:100579. doi: 10.1016/j.lanepe.2022.100579. PMID: 37069852; PMCID: PMC10105252.
    3. Mason KJ, Jordan KP, Heron N, Edwards JJ, Bailey J, Achana FA, Chen Y, Frisher M, Huntley AL, Mallen CD, Mamas MA, Png ME, Tatton S, White S, Marshall M. Musculoskeletal pain and its impact on prognosis following acute coronary syndrome or stroke: A linked electronic health record cohort study. Musculoskeletal Care. 2023 Feb 28. doi: 10.1002/msc.1748. Epub ahead of print. PMID: 36853885.
    4. Yu D, Jordan KP, Wilkie R, Bailey J, Fitzpatrick J, Ali N, Niblett P, Peat G. Persistent inequalities in consultation incidence and prevalence of low back pain and osteoarthritis in England between 2004 and 2019. Rheumatol Adv Pract. 2022 Dec 2;7(1):rkac106. doi: 10.1093/rap/rkac106. PMID: 36601519; PMCID: PMC9800855.
    5. Archer L, Koshiaris C, Lay-Flurrie S, Snell KIE, Riley RD, Stevens R, Banerjee A, Usher-Smith JA, Clegg A, Payne RA, Hobbs FDR, McManus RJ, Sheppard JP; STRAtifying Treatments In the multi-morbid Frail elderlY (STRATIFY) investigators. Development and external validation of a risk prediction model for falls in patients with an indication for antihypertensive treatment: retrospective cohort study. BMJ. 2022 Nov 8;379:e070918. doi: 10.1136/bmj-2022-070918. PMID: 36347531; PMCID: PMC9641577.
    6. Scott IC, Whittle R, Bailey J, Twohig H, Hider SL, Mallen CD, Muller S, Jordan KP. Rheumatoid arthritis, psoriatic arthritis, and axial spondyloarthritis epidemiology in England from 2004 to 2020: An observational study using primary care electronic health record data. Lancet Reg Health Eur. 2022 Oct 10;23:100519. doi: 10.1016/j.lanepe.2022.100519. PMID: 36246147; PMCID: PMC9557034.
    7. Yu D, Missen M, Jordan KP, Edwards JJ, Bailey J, Wilkie R, Fitzpatrick J, Ali N, Niblett P, Peat G. Trends in the Annual Consultation Incidence and Prevalence of Low Back Pain and Osteoarthritis in England from 2000 to 2019: Comparative Estimates from Two Clinical Practice Databases. Clin Epidemiol. 2022 Feb 17;14:179-189. doi: 10.2147/CLEP.S337323. PMID: 35210865; PMCID: PMC8860349.
    8. Sultan AA, Mallen C, Muller S, Hider S, Scott I, Helliwell T, Hall LJ. Antibiotic use and the risk of rheumatoid arthritis: a population-based case-control study. BMC Med. 2019 Aug 7;17(1):154. doi: 10.1186/s12916-019-1394-6. PMID: 31387605; PMCID: PMC6685281.
    9. Appleyard T, Ashworth J, Bedson J, Yu D, Peat G. Trends in gabapentinoid prescribing in patients with osteoarthritis: a United Kingdom national cohort study in primary care. Osteoarthritis Cartilage. 2019 Oct;27(10):1437-1444. doi: 10.1016/j.joca.2019.06.008. Epub 2019 Jul 2. PMID: 31276819.
    10. Roughley M, Sultan AA, Clarson L, Muller S, Whittle R, Belcher J, Mallen CD, Roddy E. Risk of chronic kidney disease in patients with gout and the impact of urate lowering therapy: a population-based cohort study. Arthritis Res Ther. 2018 Oct 30;20(1):243. doi: 10.1186/s13075-018-1746-1. PMID: 30376864; PMCID: PMC6235219.
    11. Ferguson RJ, Prieto-Alhambra D, Walker C, Yu D, Valderas JM, Judge A, Griffiths J, Jordan KP, Peat G, Glyn-Jones S, Silman AJ. Validation of hip osteoarthritis diagnosis recording in the UK Clinical Practice Research Datalink. Pharmacoepidemiol Drug Saf. 2019 Feb;28(2):187-193. doi: 10.1002/pds.4673. Epub 2018 Oct 30. PMID: 30375101.
    12. Prior J, Crawford-Manning F, Whittle R, et al. Vertebral fracture as risk factors for self-harm: A retrospective cohort study. Research Square; 2020. DOI: 10.21203/rs.3.rs-106349/v1. (Pre-print) https://europepmc.org/article/PPR/PPR246292
    13. Prior JA, Paskins Z, Whittle R, Abdul-Sultan A, Chew-Graham CA, Muller S, Bajpai R, Shepherd TA, Sumathipala A, Mallen CD. Rheumatic Conditions as Risk Factors for Self-Harm: A Retrospective Cohort Study. Arthritis Care Res (Hoboken). 2021 Jan;73(1):130-137. doi: 10.1002/acr.24345. PMID: 32526099. https://pubmed.ncbi.nlm.nih.gov/32526099/
    14. Prior J, Crawford-Manning F, Whittle R, et al. Vertebral fracture as risk factors for self-harm: A retrospective cohort study. Research Square; 2020. DOI: 10.21203/rs.3.rs-106349/v1. https://europepmc.org/article/PPR/PPR246292
    15. Chen Y, Hayward R, Chew-Graham CA, et al. Prognostic value of first-recorded breathlessness for future chronic respiratory and heart disease: a cohort study using a UK national primary care database. BJGP in press.
    16. Chen Y, Farooq S, Edwards J, et al. Patterns of symptoms before a diagnosis of first episode psychosis: a latent class analysis of UK primary care electronic health records. BMC Med. 2019;17:227.https://www.ncbi.nlm.nih.gov/pubmed/31801530
    17. Bedson J, Chen Y, Ashworth J, Hayward RA, Dunn KM, Jordan KP. Risk of adverse events in patients prescribed long-term opioids: A cohort study in the UK Clinical Practice Research Datalink. Eur J Pain 2019;23:908-922.https://www.ncbi.nlm.nih.gov/pubmed/30620116
    18. Partington RJ, Muller S, Helliwell T, et al Incidence, prevalence and treatment burden of polymyalgia rheumatica in the UK over two decades: a population-based study Annals of the Rheumatic Diseases Published Online First: 08 October 2018. doi: 10.1136/annrheumdis-2018-213883
    19. Muller S, Hider S, Machin A, et al. Searching for a prodrome for rheumatoid arthritis in the primary care record: A case-control study in the clinical practice research datalink. Seminars in Arthritis and Rheumatism. 2018. http://www.sciencedirect.com/science/article/pii/S0049017218302294
    20. Yu D, Jordan KP, Peat G. Underrecording of osteoarthritis in United Kingdom primary care electronic health record data. Clinical Epidemiology. 2018;10:1195-1201. doi:10.2147/CLEP.S160059.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6140739/
    21. Burton CL, Chesterton LS, Chen Y, van der Windt DA. Predicting surgical intervention in patients presenting with carpal tunnel syndrome in primary care. Clinical Epidemiology2018, 10:739-748. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6029610/
    22. Richardson E, Bedson J, Chen Y, Lacey R, Dunn KM. Increased risk of reproductive dysfunction in women prescribed long-term opioids for musculoskeletal pain: A matched cohort study in the Clinical Practice Research Datalink. Eur J Pain. 2018 Jun 6. doi: 10.1002/ejp.1256. https://www.ncbi.nlm.nih.gov/pubmed/29873872
    23. Burton CL, Chen Y, Chesterton LS, van der Windt DA. Trends in the prevalence, incidence and surgical management of carpal tunnel syndrome between 1993 and 2013: an observational analysis of UK primary care records. BMJ Open. 2018;8(6):e020166. https://www.ncbi.nlm.nih.gov/pubmed/29921681
    24. Paskins Z, Whittle R, Sultan AA, Muller S, Blagojevic-Bucknall M, Helliwell T, Hider S, Roddy E, Mallen C. Risk of fracture among patients with polymyalgia rheumatica and giant cell arteritis: a population-based study. BMC Med. 2018;16:4. https://www.ncbi.nlm.nih.gov/pubmed/29316928
    25. Paskins Z, Whittle R, Abdul Sultan A, Muller S, Blagojevic-Bucknall M, Helliwell T, Packham J, Hider S, Roddy E, Mallen C. Risk of fragility fracture among patients with late-onset psoriasis: a UK population-based study. Osteoporos Int. 2018;29:1659-1664. https://www.ncbi.nlm.nih.gov/pubmed/29574516
    26. Sultan AA, Whittle R, Muller S, Roddy E, Mallen CD, Bucknall M, Helliwell T, Hider S, Paskins Z. Risk of fragility fracture among patients with gout and the effect of urate-lowering therapy.2018 May 14;190(19):E581-E587. https://www.ncbi.nlm.nih.gov/pubmed/29759964
    27. Abdul Sultan A, Mallen C, Hayward R, Muller S, Whittle R, Hotston M, Roddy E. Gout and subsequent erectile dysfunction: a population-based cohort study from England. Arthritis Res Ther 2017;19:123. https://www.ncbi.nlm.nih.gov/pubmed/?term=28587655
    28. Jordan KP, Timmis A, Croft P, van der Windt DA, Denaxas S, Gonzalez-Izquierdo A, Hayward RA, Perez P, Hemingway, H. Prognosis of undiagnosed chest pain: linked electronic health record cohort study. BMJ 2017;357:j1194. https://www.ncbi.nlm.nih.gov/pubmed/28373173
    29. Abhishek A, Doherty M, Kuo CF, Mallen CD, Zhang W, Grainge MJ. Rheumatoid arthritis is getting less frequent-results of a nationwide population-based cohort study. Rheumatology (Oxford) 2017 [Epub ahead of print] https://www.ncbi.nlm.nih.gov/pubmed/28064207
    30. Richette P, Doherty M, Pascual E, Barskova V, Becce F, Castaneda-Sanabria J, Coyfish M, Guillo S, Jansen TL, Janssens H, Liote F, Mallen C. 2016 updated EULAR evidence-based recommendations for the management of gout. Annals of Rheumatic Diseases, 2017;76(1):29-42. https://www.ncbi.nlm.nih.gov/pubmed/27457514
    31. Bedson J, Chen Y, Ashworth J, Hayward RA, Walters K, Dunn KM, Jordan KP. Trends in long-term opioid prescribing in primary care patients with musculoskeletal conditions: an observational database study. PAIN 2016;157(7):1525-31. http://www.ncbi.nlm.nih.gov/pubmed/27003191
    32. Muller S, Hider SL, Raza K, Stack RJ, Hayward RA, Mallen CD. An algorithm to identify rheumatoid arthritis in primary care: a Clinical Practice Research Datalink study. BMJ Open 2015;5:e009309.http://www.ncbi.nlm.nih.gov/pubmed/26700281
    33. Kuo CF, Grainge MJ, Mallen C, Zhang W, Doherty M. Impact of gout on the risk of atrial fibrillation. Rheumatology (Oxford). 2016;55(4):721-8.https://www.ncbi.nlm.nih.gov/pubmed/26683193
    34. Kuo CF, Grainge MJ, Mallen C, Zhang W, Doherty M. Effect of allopurinol on all-cause mortality in adults with incident gout: propensity score-matched landmark analysis. Rheumatology (Oxford). 2015;54(12):2145-50. http://www.ncbi.nlm.nih.gov/pubmed/26170376
    35. Clarson LE, Hider SL, Belcher J, Heneghan C, Roddy E, Mallen CD. Increased risk of vascular disease associated with gout: a retrospective, matched cohort study in the UK Clinical Practice Research Datalink. Annals of Rheumatic Diseases, 2015;74(4):642-7. http://www.ncbi.nlm.nih.gov/pubmed/25165032
    36. Hancock AT, Mallen CD, Muller S, Belcher J, Roddy E, Helliwell T, Hider SL .Risk of vascular events in patients with polymyalgia rheumatica. CMAJ, 2014;16;186:E495-501. http://www.ncbi.nlm.nih.gov/pubmed/25070989
    37. Kuo CF, Grainge MJ, Mallen C, Zhang W, Doherty M. Eligibility for and prescription of urate-lowering treatment in patients with incident gout in England. JAMA, 2014;312(24):2684-6. doi: 10.1001/jama.2014.14484. http://www.ncbi.nlm.nih.gov/pubmed/25536262
    38. Kuo CF, Grainge MJ, Mallen C, Zhang W, Doherty M. Comorbidities in patients with gout prior to and following diagnosis: case-control study. Annals of Rheumatic Diseases, 2016;75(1):210-7http://www.ncbi.nlm.nih.gov/pubmed/25398375
    39. Kuo CF, Grainge MJ, Mallen C, Zhang W, Doherty M. Rising burden of gout in the UK but continuing suboptimal management: a nationwide population study. Annals of Rheumatic Diseases, 2015;74(4):661-7.http://www.ncbi.nlm.nih.gov/pubmed/24431399
    40. Muller S, Hider SL, Belcher J, Helliwell T, Mallen CD. Is cancer associated with polymyalgia rheumatica? A cohort study in the General Practice Research Database. Annals of Rheumatic Diseases, 2014;73:10:1769-73. http://www.ncbi.nlm.nih.gov/pubmed/23842460
    41. Jordan KP, Hayward RA, Blagojevic-Bucknall M, Croft P. Incidence of prostate, breast, lung and colorectal cancer following new consultation for musculoskeletal problems: a cohort study among UK primary care patients. International Journal of Cancer, 2013;133:3:713-720.http://www.ncbi.nlm.nih.gov/pubmed/23354595
    42. Kadam UT, Blagojevic M, Belcher J. Statin use and clinical osteoarthritis in the general population: a longitudinal study. Journal of General Internal Medicine, 2013;28(7):943-9.http://www.ncbi.nlm.nih.gov/pubmed/23471638
    43. Jordan KP, Croft P. Mortality and cancer in patients with new musculoskeletal episodes: a cohort study. British Journal of General Practice, 2010; DOI:10.3399/bjgp10X483526 (abridged text, in print: British Journal of General Practice,2010; 60:176-179).http://www.ncbi.nlm.nih.gov/pubmed/20202352
    44. Jordan K, Clarke AM, Symmons DPM, Fleming D, Porcheret M, Kadam UT, Croft P. Measuring disease prevalence: a comparison of musculoskeletal disease using four general practice consultation databases. British Journal of General Practice, 2007;57:7-14.http://www.ncbi.nlm.nih.gov/pubmed/17244418
    45. Henry-Blake C, Marshall M, Treadwell K, Parmar S, Higgs J, Edwards JJ, Peat G. The use of plain radiography in diagnosing osteoarthritis: A systematic review and time trend analysis. Musculoskeletal Care. 2022 Nov 25. doi: 10.1002/msc.1718. Epub ahead of print. PMID: 36426659.
    46. Somayajula, Glenys G.a; Campbell, Paulb,c,*; Protheroe, Joannea,b; Lacey, Rosie J.b; Dunn, Kate M.b Chronic widespread pain in children and adolescents presenting in primary care, PAIN: June 04, 2021 - Volume - Issue - doi: 10.1097/j.pain.0000000000002354 https://journals.lww.com/pain/Abstract/9000/Chronic_widespread_pain_in_children_and.98002.aspx
    47. Jordan KP, Campbell P, Rathod-Mistry T, Marshall M, Bailey J, Chew-Graham C A, Croft P, Frisher M, Hayward R, Negi R, Singh S, Tantalo-Baker S, TarafdarS, Babatunde O O., Robinson L, Sumathipala A, Thein N, Walters K, Weich S (2020) Markers of dementia-related health in primary care electronic health records, Aging & Mental Health, https://pubmed.ncbi.nlm.nih.gov/32578454/
    48. Prathivadi Bhayankaram N, Lacey RJ, Barnett LA, Jordan KP, Dunn KM. Musculoskeletal consultations from childhood to adulthhood: a longitudinal study. J Publich Health (Oxf) 2019, in press. https://www.ncbi.nlm.nih.gov/pubmed/31774535
    49. Andreucci A, Campbell P, Richardson E, Chen Y, Dunn KM.Sleep problems and psychological symptoms as predictors of musculoskeletal conditions in children and adolescents. Eur J Pain 2019, in press. https://www.ncbi.nlm.nih.gov/pubmed/31587420
    50. Tan A, Strauss VY, Protheroe J, Dunn KM. Epidemiology of paediatric presentations with musculoskeletal problems in primary care. BMC Musculoskelet Disord. 2018 Feb 6;19(1):40. https://www.ncbi.nlm.nih.gov/pubmed/29409492
    51. Chen Y, Bedson J, Hayward RA, Jordan KP. Trends in prescribing of non-steroidal anti-inflammatory drugs in patients with cardiovascular disease: influence of national guidelines in UK primary care. Fam Pract. 2018 Jan 22. doi: 10.1093/fampra/cmx142. https://www.ncbi.nlm.nih.gov/pubmed/29365071
    52. Michaleff ZA, Campbell P, Protheroe J, Rajani A, Dunn KM. Consultation patterns of children and adolescents with knee pain in UK general practice: analysis of medical records. BMC Musculoskelet Disord 2017:18:239. https://www.ncbi.nlm.nih.gov/pubmed/28576118
    53. Walker J, Liddle J, Jordan KP, Campbell P. Affective concordance in couples: a cross-sectional analysis of depression and anxiety consultations within a population of 13,507 couples in primary care. BMC Psychiatry 2017:17:190. https://www.ncbi.nlm.nih.gov/pubmed/28526002
    54. Barnett LA, Jordan KP, Edwards JJ, Yu, D, van der Windt DA. Does metformin protect against osteoarthritis? An electronic health record cohort study Primary Health Care Research and Development 2017:1-6. https://www.ncbi.nlm.nih.gov/pubmed/28539134
    55. Ahmed N, Prior JA, Chen Y, Hayward R, Mallen CD, Hider SL. Prevalence of cardiovascular-related comorbidity in ankylosing spondylitis, psoriatic arthritis and psoriasis in primary care: a matched retrospective cohort study. Clin Rheumatol 2016;35:3069-73. https://www.ncbi.nlm.nih.gov/pubmed/27485152
    56. Mansfield KE, Sim J, Croft P, Jordan KP. Identifying patients with chronic widespread pain in primary care. Pain 2017;158:110-9. https://www.ncbi.nlm.nih.gov/pubmed/27749607
    57. Wynne-Jones G, Dunn KM. Has there been a change in the rates of UK sickness certification for back pain over time? An examination of histocial data from 2000 to 2010. BMJ Open 2016 Apr 25;6(4):e009634. http://www.ncbi.nlm.nih.gov/pubmed/27113234
    58. Yu D, Peat G, Bedson J, Jordan KP. Annual consultation incidence of osteoarthritis estimated from population-based health care data in England. Rheumatology (Oxford). 2015 Jul 9. pii: kev231. [Epub ahead of print]. http://www.ncbi.nlm.nih.gov/pubmed/26163287
    59. Prior JA, Ogollah R, Muller S, Chandratre P, Roddy E, Mallen CD. Gout, anxiety, and depression in primary care: a matched retrospective cohort study. Scand J Rheumatol. 2015;44(3):257-8. http://www.ncbi.nlm.nih.gov/pubmed/25962434
    60. Hayward RA, Chen Y, Croft P, Jordan KP. Presentation of respiratory symptoms prior to diagnosis in general practice: a case control study examining free text and morbidity codes. BMJ Open, 2015 Jun 12;5(6):e007355. doi: 10.1136/bmjopen-2014-007355. www.ncbi.nlm.nih.gov/pubmed/26070795
    61. Shraim M, Blagojevic-Bucknall M, Mallen CD, Dunn KM. Repeated primary care consultations for non-specific physical symptoms in children in UK: a cohort study. BMC Fam Pract. 2014;5;15:195. http://www.ncbi.nlm.nih.gov/pubmed/25477255
    62. Ndlovu M, Bedson J, Jones PW, Jordan KP. Pain medication management of musculoskeletal conditions at first presentation in primary care: analysis of routinely collected medical record data. BMC Musculoskeletal Disorders, 2014;15:418. http://www.ncbi.nlm.nih.gov/pubmed/25492581
    63. Shraim M, Blagojevic-Bucknall M, Mallen CD, Dunn KM. The association between GP consultations for non-specific physical symptoms in children and parents: a case-control study. PLoS ONE 2014;9(9): e108039. doi:10.1371/journal.pone.0108039. http://www.ncbi.nlm.nih.gov/pubmed/25251344
    64. Green DJ, Muller S, Mallen CD, Hider SL. Fatigue as a precursor to Polymyalgia Rheumatica: an explorative retrospective cohort study. Scandinavian Journal of Rheumatology, 2015;44(3):219-23. http://www.ncbi.nlm.nih.gov/pubmed/25366389
    65. Roberts ER, Green D, Kadam UT. Chronic condition comorbidity and multidrug therapy in general practice populations: a cross-sectional linkage study. BMJ Open. 2014 Jul 11;4(7):e005429. doi: 10.1136/bmjopen-2014-005429. http://www.ncbi.nlm.nih.gov/pubmed/25015475
    66. Nderitu P, Doos L, Strauss VY, Lambie M, Davies SJ, Kadam UT. Analgesia dose prescribing and estimated glomerular filtration rate decline: a general practice database linkage cohort study. BMJ Open. 2014 Aug 19;4(8):e005581. doi: 10.1136/bmjopen-2014-005581. http://www.ncbi.nlm.nih.gov/pubmed/25138808
    67. Strauss VY, Jones PW, Kadam UT, Jordan KP. Distinct trajectories of multimorbidity in primary care were identified using latent class growth analysis, Journal of Clinical Epidemiology, 2014;67:10:1163-1171. http://www.ncbi.nlm.nih.gov/pubmed/25063556
    68. Monk HL, Muller S, Mallen CD, Hider SL. Cardiovascular screening in rheumatoid arthritis: a cross-sectional primary care database study. BMC Fam Pract. 2013 Oct 10;14:150. doi: 10.1186/1471-2296-14-150. http://www.ncbi.nlm.nih.gov/pubmed/24106825
    69. Lacey RJ, Jordan KP, Croft PR. Does attrition during follow-up of a population cohort study inevitably lead to biased estimates of health status? PLoS ONE 2013; 8(12): e83948. doi:10.1371/journal.pone.0083948 http://www.ncbi.nlm.nih.gov/pubmed/24386313
    70. Roddy E, Muller S, Hayward R, Mallen CD. The association of gout with sleep disorders: a cross-sectional study in primary care. BMC Musculoskelet Disord. 2013;14(1):119. http://www.ncbi.nlm.nih.gov/pubmed/23557073
    71. Jordan KP, Jöud A, Bergknut C, Croft P, Edwards JJ, Peat G, Petersson IF, Turkiewicz A, Wilkie R, Englund M. International comparisons of the prevalence of health care for musculoskeletal disorders using population-based health care data from England and Sweden. Annals of the Rheumatic Diseases, 2014;73:1:212-218. http://www.ncbi.nlm.nih.gov/pubmed/23345602
    72. Burton C, Campbell P, Jordan K, Strauss V, Mallen C. The association of anxiety and depression with future dementia diagnosis: a case-control study in primary care. Family Practice, 2013;30:1:25-30. http://www.ncbi.nlm.nih.gov/pubmed/22915794
    73. Bedson J, Belcher J, Martino OI, Ndlovu M, Rathod T, Walters K, Dunn KM, Jordan KP. The effectiveness of national guidance in changing analgesic prescribing in primary care from 2002 to 2009: an observational database study. European Journal of Pain, 2013;17:3:434-443. http://www.ncbi.nlm.nih.gov/pubmed/22865816
    74. Helliwell T, Hider SL, Mallen CD. Polymyalgia rheumatica: diagnosis, prescribing, and monitoring in general practice. Br J Gen Pract. 2013;63(610):e361-6. http://www.ncbi.nlm.nih.gov/pubmed/23643235
    75. Mallen CD, Wynne-Jones G, Dunn KM. Sickness certification for mental health problems: an analysis of a general practice consultation database. Primary Health Care Research and Development, 2011;12:179-82. http://www.ncbi.nlm.nih.gov/pubmed/21457602
    76. Wood L, Muller S, Peat G. The epidemiology of patellofemoral disorders in adulthood: a review of routine general practice morbidity recording. Primary Health Care Research and Development, 2011;12:2:157-64. http://www.ncbi.nlm.nih.gov/pubmed/21457600
    77. Jordan KP, Kadam UT, Hayward R, Porcheret M, Young C, Croft P. Annual consultation prevalence of regional musculoskeletal problems in primary care: an observational study. BMC Musculoskeletal Disorders, 2010; 11:144. http://www.ncbi.nlm.nih.gov/pubmed/20598124
    78. Wynne-Jones G, Mallen CD, Dunn KM. Sickness certification for musculoskeletal conditions in general practice. Clinical Rheumatology, 2010; 29:5:573-4. http://www.ncbi.nlm.nih.gov/pubmed/20179979
    79. Menz HB, Jordan KP, Roddy E, Croft PR. Characteristics of primary care consultations for musculoskeletal foot and ankle problems in the UK. Rheumatology, 2010;49:7:1391-1398. http://www.ncbi.nlm.nih.gov/pubmed/20403912
    80. Roddy E, Mallen CD, Hider SL, Jordan KP. Prescription and comorbidity screening following consultation for acute gout in primary care. Rheumatology, 2010;49:1:105-111. http://www.ncbi.nlm.nih.gov/pubmed/19920095
    81. Wynne-Jones G, Mallen CD, Mottram S, Main CJ, Dunn KM. Identification of UK sickness certification rates, standardised for age and sex. British Journal of General Practice. 2009;59:564:510-6. http://www.ncbi.nlm.nih.gov/pubmed/19566999
    82. Hughes H, Jordan KP, Rajaratnam G, Fawcett S, Croft P. Recent changes in general practice morbidity in older people. Age and Ageing, 2008;37:5:572-575. http://www.ncbi.nlm.nih.gov/pubmed/18487261
    83. Jordan K, Clarke AM, Symmons DPM, Fleming D, Porcheret M, Kadam UT, Croft P. Measuring disease prevalence: a comparison of musculoskeletal disease using four general practice consultation databases. British Journal of General Practice, 2007;57:7-14. http://www.ncbi.nlm.nih.gov/pubmed/17244418
    84. Jordan K, Porcheret M, Kadam UT, Croft P. The use of general practice consultation databases in rheumatology research (editorial). Rheumatology 2006;45:2:126-128.http://www.ncbi.nlm.nih.gov/pubmed/16368726
    85. Foster A, Jordan K, Croft P. Is frequent attendance in primary care disease-specific?. Family Practice, 2006;23:4:444-452. http://www.ncbi.nlm.nih.gov/pubmed/16675502
    86. Porcheret M, Hughes R, Evans D, Jordan K, Whitehurst T, Ogden H, Croft P on behalf of the North Staffordshire General Practice Research Network. Data quality of general practice electronic health records: the impact of a program of assessments, feedback and training. Journal of the American Medical Informatics Association, 2004;11:1:78-86. http://www.ncbi.nlm.nih.gov/pubmed/14527973