Data Quality Assurance
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Page last updated: 3-MAR-2008
Data Quality Assurance
Colonoscopy & Sigmoidoscopy
Completeness of coding within a group of codes: H20-H28 (3-digit level)
QA sample data (extract from SMR01 National data)
| Main Operation - code which should have been recorded | |||||||||||||
| Colonoscopy & Sigmoidmoscopy | Other Procedures | SMR Total | |||||||||||
| H20 | H22 | H23 | H25 | H26 | H28 | Total | Chapter H | T24 | Total | ||||
| Lower GI tract | H20 | 21 | 1 | 22 | |||||||||
| Main | H22 | 2 | 130 | 2 | 1 | 1 | 136 | ||||||
| Operation | H23 | 7 | 1 | 8 | |||||||||
| as Recorded | H25 | 1 | 1 | 3 | 70 | 5 | 80 | ||||||
| on SMR01 | H26 | 1 | 1 | ||||||||||
| H28 | 5 | 1 | 6 | ||||||||||
| QA Total | 24 | 132 | 10 | 72 | 1 | 5 | 244 | 8 | 1 | 9 | 253 | ||
| Other procedures | X29 | 1 | 1 | ||||||||||
| X33 | 1 | ||||||||||||
| X38 | 1 | 1 | |||||||||||
| Operation omitted on SMR | 1 | ||||||||||||
| QA under-recorded total | 1 | 2 | 1 | 2 | 6 | ||||||||
| Number of required codes | 250 | ||||||||||||
| Legend | ||||
| Group correctly coded | Group under-recorded | |||
| Group over-recorded | Group recorded on SMR01 | |||
| The Group was recorded with: | Accuracy | 95% CI | Sensitivity | Completeness |
| 96.4% | 2.3% | 97.6% | 101.2% |
| Description of OPCS4 codes | |||
| Lower GI endoscopy codes | Non-lower GI endoscopy codes | ||
| H20 | Endoscopic extirpation of lesion of colon | H33 | Excision of rectum |
| H21 | Other therapeutic endoscopic operations on colon | H50 | Repair of anus |
| H22 | Diagnostic endoscopic examination of colon | H52 | Destruction of haemorrhoid |
| H23 | Endoscopic extirpation of lesion of lower bowel using fibreoptic sigmoidoscope | H53 | Other operations on haemorrhoid |
| H24 | Other therapeutic endo ops on lower bowel using fibreoptic sigmoidoscope | T24 | Primary repair of umbilical hernia |
| H25 | Diagnostic endo examination on lower bowel using fibreoptic sigmoidoscope | X29 | Continuous infusion of therapeutic substance |
| H26 | Endo extirpation of lesion of sigmoid colon using rigid sigmoidoscope | X33 | Other blood transfusion |
| H27 | Other therapeutic endo ops on sigmoid colon using rigid sigmoidoscope | X38 | Subcutaneous injection |
| H28 | Diagnostic endo examination of sigmoid colon using rigid sigmoidoscope | ||
Main contact: 
Margaret Mason
Margaret Mason
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