@article{d34db75d6a35401c8f58296ab3bd7ee9,
title = "Challenges of one-year longitudinal follow-up of a prospective, observational cohort study using an anonymised database: Recommendations for trainee research collaboratives",
abstract = "Background: Trainee research collaboratives (TRCs) have pioneered high quality, prospective 'snap-shot' surgical cohort studies in the UK. Outcomes After Kidney injury in Surgery (OAKS) was the first TRC cohort study to attempt to collect one-year follow-up data. The aims of this study were to evaluate one-year follow-up and data completion rates, and to identify factors associated with improved follow-up rates. Methods: In this multicentre study, patients undergoing major gastrointestinal surgery were prospectively identified and followed up at one-year following surgery for six clinical outcomes. The primary outcome for this report was the follow-up rate for mortality at 1 year. The secondary outcome was the data completeness rate in those patients who were followed-up. An electronic survey was disseminated to investigators to identify strategies associated with improved follow-up. Results: Of the 173 centres that collected baseline data, 126 centres registered to participate in one-year follow-up. Overall 62.3% (3482/5585) of patients were followed-up at 1 year; in centres registered to collect one-year outcomes, the follow-up rate was 82.6% (3482/4213). There were no differences in sex, comorbidity, operative urgency, or 7-day postoperative AKI rate between patients who were lost to follow-up and those who were successfully followed-up. In centres registered to collect one-year follow-up outcomes, overall data completeness was 83.1%, with 57.9% (73/126) of centres having ≥95% data completeness. Factors associated with increased likelihood of achieving ≥95% data completeness were total number of patients to be followed-up (77.4% in centres with < 15 patients, 59.0% with 15-29 patients, 51.4% with 30-59 patients, and 36.8% with > 60 patients, p = 0.030), and central versus local storage of patient identifiers (72.5% vs 48.0%, respectively, p = 0.006). Conclusions: TRC methodology can be used to follow-up patients identified in prospective cohort studies at one-year. Follow-up rates are maximized by central storage of patient identifiers. ",
keywords = "Follow-up, Methodology, Research collaborative, Surgery",
author = "Sivesh Kamarajah and McLean, {Kenneth A.} and Aditya Borakati and Drake, {Thomas M.} and Evelina Woin and Chetan Khatri and Fitzgerald, {J. Edward} and Harrison, {Ewen M.} and Aneel Bhangu and Glasbey, {James C.} and Joshua Burke and Bath, {Michael F.} and Claireaux, {Henry A.} and Buket Gundogan and Midhun Mohan and P. Deekonda and Chia Kong and Holly Joyce and Lisa McNamee and Dmitri Nepogodiev and Nishkantha Arulkumaran and Samira Bell and Fiona Duthie and Jeremy Hughes and Pinkney, {Thomas D.} and John Prowle and Toby Richards and Mark Thomas and K. Dynes and M. Patel and P. Patel and C. Wigley and R. Suresh and A. Shaw and S. Klimach and P. Jull and D. Evans and R. Preece and I. Ibrahim and V. Manikavasagar and R. Smith and Brown, {F. S.} and P. Deekonda and R. Teo and Sim, {D. P.Y.} and A. Borakati and Logan, {A. E.} and I. Barai and H. Amin and S. Suresh and R. Sethi and W. Gul and W. Bolton and O. Corbridge and L. Horne and M. Attalla and R. Morley and C. Robinson and T. Hoskins and R. McAllister and S. Lee and Y. Dennis and G. Nixon and E. Heywood and H. Wilson and L. Ng and S. Samaraweera and A. Mills and C. Doherty and E. Woin and J. Belchos and V. Phan and M. Arnold and S. Sheik-Ali and R. Suresh and A. Cordaro and E. Mills and N. Lorch and D. Thomas and B. Ibrahim and S. Chee and T. Ngan and S. Pronin and N. Thakral and T. Yeoh and J. Wilson and R. Goodson and P. Molloy and M. Akhbari and W. Gul and R. Helliwell and S. Rees and M. Al-Attar and N. Griffiths and J. Mayes and P. Thomas and S. George and A. Thind and M. Kerr and F. Shafiq and I. Yasin and M. Gallagher and E. Sewart and T. Chouari and T. Gardner and N. Goergen and Hayes, {J. D.B.} and MacLeod, {C. S.} and R. McCormack and A. McKinley and S. McKinstry and W. Milligan and L. Ooi and Rafiq, {N. M.} and T. Sammut and E. Sinclair and M. Smith and C. Baker and Boulton, {A. P.R.} and J. Collins and Copley, {H. C.} and N. Fearnhead and H. Fox and T. Mah and J. McKenna and V. Naruka and N. Nigam and B. Nourallah and S. Perera and A. Qureshi and S. Saggar and L. Sun and X. Wang and Yang, {D. D.} and P. Caroll and C. Doyle and S. Elangovan and A. Falamarzi and Perai, {K. Gascon} and E. Greenan and D. Jain and M. Lang-Orsini and S. Lim and L. O'Byrne and P. Ridgway and {Van Der Laan}, S. and J. Wong and J. Arthur and J. Barclay and P. Bradley and C. Edwin and E. Finch and E. Hayashi and M. Hopkins and D. Kelly and M. Kelly and N. McCartan and A. Ormrod and A. Pakenham and J. Hayward and C. Hitchen and A. Kishore and T. Martins and J. Philomen and R. Rao and C. Rickards and N. Burns and M. Copeland and C. Durand and A. Dyal and A. Ghaffar and A. Gidwani and M. Grant and C. Gribbon and A. Gruhn and M. Leer and K. Ahmad and G. Beattie and M. Beatty and G. Campbell and G. Donaldson and S. Graham and D. Holmes and S. Kanabar and H. Liu and C. McCann and R. Stewart and S. Vara and O. Ajibola-Taylor and Andah, {E. J.E.} and C. Ani and Cabdi, {N. M.O.} and G. Ito and M. Jones and A. Komoriyama and P. Patel and L. Titu and M. Basra and P. Gallogly and G. Harinath and Leong, {S. H.} and A. Pradhan and I. Siddiqui and S. Zaat and A. Ali and M. Galea and Looi, {W. L.} and Ng, {J. C.K.} and G. Atkin and A. Azizi and Z. Cargill and Z. China and J. Elliot and R. Jebakumar and J. Lam and G. Mudalige and C. Onyerindu and M. Renju and Babu, {V. Shankar} and M. Hussain and N. Joji and B. Lovett and H. Mownah and B. Ali and B. Cresswell and Dhillon, {A. K.} and Dupaguntla, {Y. S.} and C. Hungwe and Lowe-Zinola, {J. D.} and Tsang, {J. C.H.} and K. Bevan and C. Cardus and A. Duggal and S. Hossain and M. McHugh and M. Scott and F. Chan and R. Evans and E. Gurung and B. Haughey and B. Jacob-Ramsdale and J. Lee and E. McCann and K. O'Boyle and N. Reid and F. Hayat and S. Hodgson and R. Johnston and {Starsurg Collaborative}",
note = "Publisher Copyright: {\textcopyright} 2019 The Author(s).",
year = "2019",
month = dec,
day = "12",
doi = "10.1186/s12874-019-0857-y",
language = "English",
volume = "19",
journal = "BMC Medical Research Methodology",
issn = "1471-2288",
publisher = "BioMed Central",
number = "1",
}