The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Development of a dedicated risk-adjustment scoring system for colorectal surgery (colorectal POSSUM)
Open accessAbstract
Background: The aim of the study was to develop a dedicated colorectal Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity (CR-POSSUM) equation for predicting operative mortality, and to compare its performance with the Portsmouth (P)-POSSUM model. Methods: Data were collected prospectively from 6883 patients undergoing colorectal surgery in 15 UK hospitals between 1993 and 2001. After excluding missing data and 93 patients who did not satisfy the inclusion criteria, 4632 patients (68·2 per cent) underwent elective surgery and 2107 had an emergency operation (31·0 per cent); 2437 operations (35·9 per cent) for malignant and 4267 (62·8 per cent) for non-malignant diseases were scored. Stepwise logistic regression analysis was used to develop an age-adjusted POSSUM model and a dedicated CR-POSSUM model. A 60 : 40 per cent split-sample validation technique was adopted for model development and testing. Observed and expected mortality rates were compared. Results: The operative mortality rate for the series was 5·7 per cent (387 of 6790 patients) (elective operations 2·8 per cent; emergency surgery 12·0 per cent). The CR-POSSUM, age-adjusted POSSUM and P-POSSUM models had similar areas under the receiver–operator characteristic curves. Model calibration was similar for CR-POSSUM and age-adjusted POSSUM models, and superior to that for the P-POSSUM model. The CR-POSSUM model offered the best overall accuracy, with an observed: expected ratio of 1·000, 0·998 and 0·911 respectively (test population). Conclusion: The CR-POSSUM model provided an accurate predictor of operative mortality. External validation is required in hospitals different from those in which the model was developed.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
(1990) · Choice Reviews Online · doi:10.5860/choice.27-3338 · Cited by 35,305
The meaning and use of the area under a receiver operating characteristic (ROC) curve.
Hanley, J. A., & McNeil, B. J. (1982) · Radiology · doi:10.1148/radiology.143.1.7063747 · Cited by 21,856
Hosmer, D. W., & Lemeshow, S. (2000) · doi:10.1002/0471722146 · Cited by 20,302
POSSUM: A scoring system for surgical audit
Copeland, G. P., Jones, D., & Walters, M. (1991) · Journal of British Surgery · doi:10.1002/bjs.1800780327 · Cited by 1,709
The classification of cancer of the rectum
Dukes, C. E. (1932) · The Journal of Pathology and Bacteriology · doi:10.1002/path.1700350303 · Cited by 1,505
Risk Adjustment for Measuring Healthcare Outcomes
Iezzoni, L. I. (1994) · Cited by 955
POSSUM and Portsmouth POSSUM for predicting mortality
Prytherch, D. R., Whiteley, M. S., Higgins, B., Weaver, P. C., Prout, W. G., & Powell, S. J. (1998) · Journal of British Surgery · doi:10.1046/j.1365-2168.1998.00840.x · Cited by 792
Self-citationKhuri, S. (1997) · Journal of the American College of Surgeons · doi:10.1016/s1072-7515(97)00073-2 · Cited by 774
Kreder, H. J., & Rs, M. (1995) · PubMed · Cited by 566
Risk adjustment for measuring health care outcomes
Allison, J. (1996) · Annals of Epidemiology · doi:10.1016/s1047-2797(96)90011-3 · Cited by 534
Bayesian methods in health technology assessment: a review.
Spiegelhalter, Myles, Jones, & Abrams (2000) · Health Technology Assessment · doi:10.3310/hta4380 · Cited by 358
Monitoring the results of cardiac surgery by variable life-adjusted display
Lovegrove, J., Valencia, O., Treasure, T., Sherlaw-Johnson, C., & Gallivan, S. (1997) · The Lancet · doi:10.1016/s0140-6736(97)06507-0 · Cited by 285
Risk-adjusted prediction of operative mortality in oesophagogastric surgery with O-POSSUM
Tekkis, P. P., McCulloch, P. G., Poloniecki, J. D., et al. (2004) · British journal of surgery · doi:10.1002/bjs.4414 · Cited by 145
Self-citationOperative mortality rates among surgeons
Tekkis, P. P., Kocher, H. M., Bentley, A. J. E., Cullen, P. T., South, L. M., Trotter, G. A., & Ellul, J. P. M. (2000) · Diseases of the Colon & Rectum · doi:10.1007/bf02236732 · Cited by 112
Self-citationEvaluation of POSSUM and P-POSSUM scoring systems in patients undergoing colorectal surgery
Tekkis, P. P., Kessaris, N., Kocher, H. M., Poloniecki, J., Lyttle, J. A., & Windsor, A. C. J. (2003) · British journal of surgery · doi:10.1002/bjs.4037 · Cited by 111
Self-citationPortsmouth POSSUM models for abdominal aortic aneurysm surgery
Prytherch, D. R., Sutton, G. L., & Boyle, J. R. (2001) · Journal of British Surgery · doi:10.1046/j.0007-1323.2001.01820.x · Cited by 109
Self-citationRisk-Adjusted Surgical Outcomes
Daley, J., Henderson, W. G., & Khuri, S. F. (2001) · Annual Review of Medicine · doi:10.1146/annurev.med.52.1.275 · Cited by 107
Vascular Surgical Society operative outcome study: preoperative physiology predicts outcome
Prytherch, D. R., Beard, J. D., Ridler, B. F., & Earnshaw, J. J. (2000) · British journal of surgery · doi:10.1046/j.1365-2168.2000.01420-44.x · Cited by 8
Self-citationHarrell, F., Jr. (1996) · doi:10.1002/(sici)1097-0258(19960229)15:4<361::aid-sim168>3.0.co;2-4
Cited by
Hyde, L. Z., Valizadeh, N., Al-Mazrou, A. M., & Kiran, R. P. (2019) · The American Journal of Surgery · doi:10.1016/j.amjsurg.2018.11.017 · Cited by 37
Bagnall, N. M., Pring, E. T., Malietzis, G., Athanasiou, T., Faiz, O. D., Kennedy, R. H., & Jenkins, J. T. (2018) · International Journal of Colorectal Disease · doi:10.1007/s00384-018-3141-4 · Cited by 27
Metadata
- Authors
- Tekkis, P. P., Prytherch, D. R., Kocher, H. M., Senapati, A., Poloniecki, J. D., Stamatakis, J. D., & Windsor, A. C. J.
- Venue
- British Journal of Surgery
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-07-26
- Volume
- 91
- Issue
- 9
- Pages
- 1174-1182
- ISSN
- 0007-1323 (ISSN-L)
- 1365-2168
- OpenAlex
- W2126185271
- Cited by
- 346
- References
- 19
- FWCI
- 7.64
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
