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Research article:

Adaptation and validation of the Charlson Index for Read/OXMIS coded databases

Reference:

Nada F Khan, Rafael Perera, Stephen Harper, Peter W Rose(2010) Adaptation and validation of the Charlson Index for Read/OXMIS coded databases. BMC Family Practice, doi: 10.1186/1471-2296-11-1

Link to fulltext article
Abstract
Background The Charlson comorbidity index is widely used in ICD-9 administrative data, however, there is no translation for Read/OXMIS coded data despite increasing use of the General Practice Research Database (GPRD). Our main objective was to translate the Charlson index for use with Read/OXMIS coded data such as the GPRD and test its association with mortality. We also aimed to provide a version of the comorbidity index for other researchers using similar datasets. Methods Two clinicians translated the Charlson index into Read/OXMIS codes. We tested the association between comorbidity score and increased mortality in 146 441 patients from the GPRD using proportional hazards models. Results This Read/OXMIS translation of the Charlson index contains 3156 codes. Our validation showed a strong positive association between Charlson score and age. Cox proportional models show a positive increasing association with mortality and Charlson score. The discrimination of the logistic regression model for mortality was good (AUC = 0.853). Conclusion We have translated a commonly used comorbidity index into Read/OXMIS for use in UK primary care databases. The translated index showed a good discrimination in our study population. This is the first study to develop a co-morbidity index for use with the Read/OXMIS coding system and the GPRD. A copy of the co-morbidity index is provided for other researchers using similar databases.
Author for correspondence
Nada F Khan
Email for correspondence
nada.khan@dphpc.ox.ac.uk

Code list: res27: Metastatic tumour

167 codes in list

Code Coding system Description Entity type List name Charlson score weight
1968M Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS MULTI SITE diagnostic res27: Metastatic tumour 6
1969A Read/OXMIS MALIGNANT NEOPLASM LYMPH GLAND/NODE diagnostic res27: Metastatic tumour 6
1969M Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS LYMPH GLAN diagnostic res27: Metastatic tumour 6
1970 Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS LUNG diagnostic res27: Metastatic tumour 6
1970M Read/OXMIS METASTASIS LUNG diagnostic res27: Metastatic tumour 6
1972A Read/OXMIS PLEURAL EFFUSION MALIGNANT SECONDARY diagnostic res27: Metastatic tumour 6
1972B Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS PLEURA diagnostic res27: Metastatic tumour 6
1973M Read/OXMIS METASTASIS BRONCHUS diagnostic res27: Metastatic tumour 6
1976A Read/OXMIS MALIGNANT ASCITES diagnostic res27: Metastatic tumour 6
1976M Read/OXMIS PERITONITIS MALIGNANT diagnostic res27: Metastatic tumour 6
1977 Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS LIVER diagnostic res27: Metastatic tumour 6
1977A Read/OXMIS MALIGNANT NEOPLASM LIVER SECONDARY diagnostic res27: Metastatic tumour 6
1977M Read/OXMIS METASTASIS LIVER diagnostic res27: Metastatic tumour 6
1982 Read/OXMIS SKIN SECONDARY DEPOSITS diagnostic res27: Metastatic tumour 6
1983 Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS BRAIN diagnostic res27: Metastatic tumour 6
1983AM Read/OXMIS ADENOCARCINOMA CEREBELLAR METASTATIC diagnostic res27: Metastatic tumour 6
1983M Read/OXMIS METASTASIS CEREBRAL diagnostic res27: Metastatic tumour 6
1985 Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS BONE diagnostic res27: Metastatic tumour 6
1989 Read/OXMIS SECONDARY NEOPLASTIC DEPOSITS diagnostic res27: Metastatic tumour 6
1989M Read/OXMIS METASTASIS diagnostic res27: Metastatic tumour 6
1990C Read/OXMIS NEOPLASTIC DISEASE DISSEMINATED diagnostic res27: Metastatic tumour 6
1990M Read/OXMIS METASTASIS GENERAL diagnostic res27: Metastatic tumour 6
1990NB Read/OXMIS NEUROBLASTOMA DISSEMINATED diagnostic res27: Metastatic tumour 6
2022MT Read/OXMIS NEOPLASM MALIGNANT LYMPHOMA METASTATIC diagnostic res27: Metastatic tumour 6
209 BF Read/OXMIS MYELOFIBROSIS SECONDARY diagnostic res27: Metastatic tumour 6
209 BL Read/OXMIS MYELOSCLEROSIS SECONDARY diagnostic res27: Metastatic tumour 6
B153.00 Read/OXMIS Secondary malignant neoplasm of liver diagnostic res27: Metastatic tumour 6
B56..00 Read/OXMIS Secondary and unspecified malignant neoplasm of lymph nodes diagnostic res27: Metastatic tumour 6
B560.00 Read/OXMIS Secondary and unspec malig neop lymph nodes head/face/neck diagnostic res27: Metastatic tumour 6
B560000 Read/OXMIS Secondary and unspec malig neop of superficial parotid LN diagnostic res27: Metastatic tumour 6
B560100 Read/OXMIS Secondary and unspec malignant neoplasm mastoid lymph nodes diagnostic res27: Metastatic tumour 6
B560200 Read/OXMIS Secondary and unspec malig neop superficial cervical LN diagnostic res27: Metastatic tumour 6
B560300 Read/OXMIS Secondary and unspec malignant neoplasm occipital lymph node diagnostic res27: Metastatic tumour 6
B560400 Read/OXMIS Secondary and unspec malig neop deep parotid lymph nodes diagnostic res27: Metastatic tumour 6
B560500 Read/OXMIS Secondary and unspec malig neop submandibular lymph nodes diagnostic res27: Metastatic tumour 6
B560600 Read/OXMIS Secondary and unspec malig neop of facial lymph nodes diagnostic res27: Metastatic tumour 6
B560700 Read/OXMIS Secondary and unspec malig neop submental lymph nodes diagnostic res27: Metastatic tumour 6
B560800 Read/OXMIS Secondary and unspec malig neop anterior cervical LN diagnostic res27: Metastatic tumour 6
B560900 Read/OXMIS Secondary and unspec malig neop deep cervical LN diagnostic res27: Metastatic tumour 6
B560z00 Read/OXMIS Secondary unspec malig neop lymph nodes head/face/neck NOS diagnostic res27: Metastatic tumour 6
B561.00 Read/OXMIS Secondary and unspec malig neop intrathoracic lymph nodes diagnostic res27: Metastatic tumour 6
B561000 Read/OXMIS Secondary and unspec malig neop internal mammary lymph nodes diagnostic res27: Metastatic tumour 6
B56..11 Read/OXMIS Lymph node metastases diagnostic res27: Metastatic tumour 6
B561100 Read/OXMIS Secondary and unspec malig neop intercostal lymph nodes diagnostic res27: Metastatic tumour 6
B561200 Read/OXMIS Secondary and unspec malig neop diaphragmatic lymph nodes diagnostic res27: Metastatic tumour 6
B561300 Read/OXMIS Secondary and unspec malig neop ant mediastinal lymph nodes diagnostic res27: Metastatic tumour 6
B561400 Read/OXMIS Secondary and unspec malig neop post mediastinal lymph nodes diagnostic res27: Metastatic tumour 6
B561500 Read/OXMIS Secondary and unspec malig neop paratracheal lymph nodes diagnostic res27: Metastatic tumour 6
B561600 Read/OXMIS Secondary and unspec malig neop superfic tracheobronchial LN diagnostic res27: Metastatic tumour 6
B561700 Read/OXMIS Secondary and unspec malig neop inferior tracheobronchial LN diagnostic res27: Metastatic tumour 6
B561800 Read/OXMIS Secondary and unspec malig neop bronchopulmonary lymph nodes diagnostic res27: Metastatic tumour 6
B561900 Read/OXMIS Secondary and unspec malig neop pulmonary lymph nodes diagnostic res27: Metastatic tumour 6
B561z00 Read/OXMIS Secondary and unspec malig neop intrathoracic LN NOS diagnostic res27: Metastatic tumour 6
B562.00 Read/OXMIS Secondary and unspec malig neop intra-abdominal lymph nodes diagnostic res27: Metastatic tumour 6
B562000 Read/OXMIS Secondary and unspec malig neop coeliac lymph nodes diagnostic res27: Metastatic tumour 6
B562100 Read/OXMIS Secondary and unspec malig neop superficial mesenteric LN diagnostic res27: Metastatic tumour 6
B562200 Read/OXMIS Secondary and unspec malig neop inferior mesenteric LN diagnostic res27: Metastatic tumour 6
B562300 Read/OXMIS Secondary and unspec malig neop common iliac lymph nodes diagnostic res27: Metastatic tumour 6
B562400 Read/OXMIS Secondary and unspec malig neop external iliac lymph nodes diagnostic res27: Metastatic tumour 6
B562z00 Read/OXMIS Secondary and unspec malig neop intra-abdominal LN NOS diagnostic res27: Metastatic tumour 6
B563.00 Read/OXMIS Secondary and unspec malig neop axilla and upper limb LN diagnostic res27: Metastatic tumour 6
B563000 Read/OXMIS Secondary and unspec malig neop axillary lymph nodes diagnostic res27: Metastatic tumour 6
B563100 Read/OXMIS Secondary and unspec malig neop supratrochlear lymph nodes diagnostic res27: Metastatic tumour 6
B563200 Read/OXMIS Secondary and unspec malig neop infraclavicular lymph nodes diagnostic res27: Metastatic tumour 6
B563300 Read/OXMIS Secondary and unspec malig neop pectoral lymph nodes diagnostic res27: Metastatic tumour 6
B563z00 Read/OXMIS Secondary and unspec malig neop axilla and upper limb LN NOS diagnostic res27: Metastatic tumour 6
B564.00 Read/OXMIS Secondary and unspec malig neop inguinal and lower limb LN diagnostic res27: Metastatic tumour 6
B564000 Read/OXMIS Secondary and unspec malig neop superficial inguinal LN diagnostic res27: Metastatic tumour 6
B564100 Read/OXMIS Secondary and unspec malig neop deep inguinal lymph nodes diagnostic res27: Metastatic tumour 6
B564200 Read/OXMIS Secondary and unspec malig neop popliteal lymph nodes diagnostic res27: Metastatic tumour 6
B564z00 Read/OXMIS Secondary and unspec malig neop of inguinal and leg LN NOS diagnostic res27: Metastatic tumour 6
B565.00 Read/OXMIS Secondary and unspec malig neop intrapelvic lymph nodes diagnostic res27: Metastatic tumour 6
B565000 Read/OXMIS Secondary and unspec malig neop internal iliac lymph nodes diagnostic res27: Metastatic tumour 6
B565100 Read/OXMIS Secondary and unspec malig neop inferior epigastric LN diagnostic res27: Metastatic tumour 6
B565200 Read/OXMIS Secondary and unspec malig neop circumflex iliac LN diagnostic res27: Metastatic tumour 6
B565300 Read/OXMIS Secondary and unspec malig neop sacral lymph nodes diagnostic res27: Metastatic tumour 6
B565400 Read/OXMIS Secondary and unspec malig neop obturator lymph nodes diagnostic res27: Metastatic tumour 6
B565z00 Read/OXMIS Secondary and unspec malig neop intrapelvic LN NOS diagnostic res27: Metastatic tumour 6
B56y.00 Read/OXMIS Secondary and unspec malig neop lymph nodes multiple sites diagnostic res27: Metastatic tumour 6
B56z.00 Read/OXMIS Secondary and unspec malig neop lymph nodes NOS diagnostic res27: Metastatic tumour 6
B57..00 Read/OXMIS Secondary malig neop of respiratory and digestive systems diagnostic res27: Metastatic tumour 6
B570.00 Read/OXMIS Secondary malignant neoplasm of lung diagnostic res27: Metastatic tumour 6
B571.00 Read/OXMIS Secondary malignant neoplasm of mediastinum diagnostic res27: Metastatic tumour 6
B57..11 Read/OXMIS Metastases of respiratory and/or digestive systems diagnostic res27: Metastatic tumour 6
B57..12 Read/OXMIS Secondary carcinoma of respiratory and/or digestive systems diagnostic res27: Metastatic tumour 6
B572.00 Read/OXMIS Secondary malignant neoplasm of pleura diagnostic res27: Metastatic tumour 6
B573.00 Read/OXMIS Secondary malignant neoplasm of other respiratory organs diagnostic res27: Metastatic tumour 6
B574.00 Read/OXMIS Secondary malignant neoplasm of small intestine and duodenum diagnostic res27: Metastatic tumour 6
B574000 Read/OXMIS Secondary malignant neoplasm of duodenum diagnostic res27: Metastatic tumour 6
B574100 Read/OXMIS Secondary malignant neoplasm of jejunum diagnostic res27: Metastatic tumour 6
B574200 Read/OXMIS Secondary malignant neoplasm of ileum diagnostic res27: Metastatic tumour 6
B574z00 Read/OXMIS Secondary malig neop of small intestine or duodenum NOS diagnostic res27: Metastatic tumour 6
B575.00 Read/OXMIS Secondary malignant neoplasm of large intestine and rectum diagnostic res27: Metastatic tumour 6
B575000 Read/OXMIS Secondary malignant neoplasm of colon diagnostic res27: Metastatic tumour 6
B575100 Read/OXMIS Secondary malignant neoplasm of rectum diagnostic res27: Metastatic tumour 6
B575z00 Read/OXMIS Secondary malig neop of large intestine or rectum NOS diagnostic res27: Metastatic tumour 6
B576.00 Read/OXMIS Secondary malig neop of retroperitoneum and peritoneum diagnostic res27: Metastatic tumour 6
B576000 Read/OXMIS Secondary malignant neoplasm of retroperitoneum diagnostic res27: Metastatic tumour 6
B576100 Read/OXMIS Secondary malignant neoplasm of peritoneum diagnostic res27: Metastatic tumour 6
B576200 Read/OXMIS Malignant ascites diagnostic res27: Metastatic tumour 6
B576z00 Read/OXMIS Secondary malig neop of retroperitoneum or peritoneum NOS diagnostic res27: Metastatic tumour 6
B577.00 Read/OXMIS Secondary malignant neoplasm of liver diagnostic res27: Metastatic tumour 6
B577.11 Read/OXMIS Liver metastases diagnostic res27: Metastatic tumour 6
B57y.00 Read/OXMIS Secondary malignant neoplasm of other digestive organ diagnostic res27: Metastatic tumour 6
B57z.00 Read/OXMIS Secondary malig neop of respiratory or digestive system NOS diagnostic res27: Metastatic tumour 6
B58..00 Read/OXMIS Secondary malignant neoplasm of other specified sites diagnostic res27: Metastatic tumour 6
B580.00 Read/OXMIS Secondary malignant neoplasm of kidney diagnostic res27: Metastatic tumour 6
B581.00 Read/OXMIS Secondary malignant neoplasm of other urinary organs diagnostic res27: Metastatic tumour 6
B581000 Read/OXMIS Secondary malignant neoplasm of ureter diagnostic res27: Metastatic tumour 6
B58..11 Read/OXMIS Secondary carcinoma of other specified sites diagnostic res27: Metastatic tumour 6
B581100 Read/OXMIS Secondary malignant neoplasm of bladder diagnostic res27: Metastatic tumour 6
B581200 Read/OXMIS Secondary malignant neoplasm of urethra diagnostic res27: Metastatic tumour 6
B581z00 Read/OXMIS Secondary malignant neoplasm of other urinary organ NOS diagnostic res27: Metastatic tumour 6
B582.00 Read/OXMIS Secondary malignant neoplasm of skin diagnostic res27: Metastatic tumour 6
B582000 Read/OXMIS Secondary malignant neoplasm of skin of head diagnostic res27: Metastatic tumour 6
B582100 Read/OXMIS Secondary malignant neoplasm of skin of face diagnostic res27: Metastatic tumour 6
B582200 Read/OXMIS Secondary malignant neoplasm of skin of neck diagnostic res27: Metastatic tumour 6
B582300 Read/OXMIS Secondary malignant neoplasm of skin of trunk diagnostic res27: Metastatic tumour 6
B582400 Read/OXMIS Secondary malignant neoplasm of skin of shoulder and arm diagnostic res27: Metastatic tumour 6
B582500 Read/OXMIS Secondary malignant neoplasm of skin of hip and leg diagnostic res27: Metastatic tumour 6
B582600 Read/OXMIS Secondary malignant neoplasm of skin of breast diagnostic res27: Metastatic tumour 6
B582z00 Read/OXMIS Secondary malignant neoplasm of skin NOS diagnostic res27: Metastatic tumour 6
B583.00 Read/OXMIS Secondary malignant neoplasm of brain and spinal cord diagnostic res27: Metastatic tumour 6
B583000 Read/OXMIS Secondary malignant neoplasm of brain diagnostic res27: Metastatic tumour 6
B583100 Read/OXMIS Secondary malignant neoplasm of spinal cord diagnostic res27: Metastatic tumour 6
B583200 Read/OXMIS Cerebral metastasis diagnostic res27: Metastatic tumour 6
B583z00 Read/OXMIS Secondary malignant neoplasm of brain or spinal cord NOS diagnostic res27: Metastatic tumour 6
B584.00 Read/OXMIS Secondary malignant neoplasm of other part of nervous system diagnostic res27: Metastatic tumour 6
B585.00 Read/OXMIS Secondary malignant neoplasm of bone and bone marrow diagnostic res27: Metastatic tumour 6
B585000 Read/OXMIS Pathological fracture due to metastatic bone disease diagnostic res27: Metastatic tumour 6
B586.00 Read/OXMIS Secondary malignant neoplasm of ovary diagnostic res27: Metastatic tumour 6
B587.00 Read/OXMIS Secondary malignant neoplasm of adrenal gland diagnostic res27: Metastatic tumour 6
B58y.00 Read/OXMIS Secondary malignant neoplasm of other specified sites diagnostic res27: Metastatic tumour 6
B58y000 Read/OXMIS Secondary malignant neoplasm of breast diagnostic res27: Metastatic tumour 6
B58y100 Read/OXMIS Secondary malignant neoplasm of uterus diagnostic res27: Metastatic tumour 6
B58y200 Read/OXMIS Secondary malignant neoplasm of cervix uteri diagnostic res27: Metastatic tumour 6
B58y211 Read/OXMIS Secondary cancer of the cervix diagnostic res27: Metastatic tumour 6
B58y300 Read/OXMIS Secondary malignant neoplasm of vagina diagnostic res27: Metastatic tumour 6
B58y400 Read/OXMIS Secondary malignant neoplasm of vulva diagnostic res27: Metastatic tumour 6
B58y411 Read/OXMIS Secondary cancer of the vulva diagnostic res27: Metastatic tumour 6
B58y500 Read/OXMIS Secondary malignant neoplasm of prostate diagnostic res27: Metastatic tumour 6
B58y600 Read/OXMIS Secondary malignant neoplasm of testis diagnostic res27: Metastatic tumour 6
B58y700 Read/OXMIS Secondary malignant neoplasm of penis diagnostic res27: Metastatic tumour 6
B58y800 Read/OXMIS Secondary malignant neoplasm of epididymis and vas deferens diagnostic res27: Metastatic tumour 6
B58y900 Read/OXMIS Secondary malignant neoplasm of tongue diagnostic res27: Metastatic tumour 6
B58yz00 Read/OXMIS Secondary malignant neoplasm of other specified site NOS diagnostic res27: Metastatic tumour 6
B58z.00 Read/OXMIS Secondary malignant neoplasm of other specified site NOS diagnostic res27: Metastatic tumour 6
B59..00 Read/OXMIS Malignant neoplasm of unspecified site diagnostic res27: Metastatic tumour 6
B590.00 Read/OXMIS Disseminated malignancy NOS diagnostic res27: Metastatic tumour 6
B590.11 Read/OXMIS Carcinomatosis diagnostic res27: Metastatic tumour 6
B591.00 Read/OXMIS Other malignant neoplasm NOS diagnostic res27: Metastatic tumour 6
B592.00 Read/OXMIS Malignant neoplasms of independent (primary) multiple sites diagnostic res27: Metastatic tumour 6
B592X00 Read/OXMIS Kaposi's sarcoma of multiple organs diagnostic res27: Metastatic tumour 6
B593.00 Read/OXMIS Primary malignant neoplasm of unknown site diagnostic res27: Metastatic tumour 6
B594.00 Read/OXMIS Secondary malignant neoplasm of unknown site diagnostic res27: Metastatic tumour 6
B59z.00 Read/OXMIS Malignant neoplasm of unspecified site NOS diagnostic res27: Metastatic tumour 6
B5y..00 Read/OXMIS Malignant neoplasm of other and unspecified site OS diagnostic res27: Metastatic tumour 6
B5z..00 Read/OXMIS Malignant neoplasm of other and unspecified site NOS diagnostic res27: Metastatic tumour 6
ByuC.00 Read/OXMIS [X]Malignant neoplasm of ill-defined; secondary and unspeci diagnostic res27: Metastatic tumour 6
ByuC100 Read/OXMIS [X]Malignant neoplasm/overlap lesion/other?defined sites diagnostic res27: Metastatic tumour 6
ByuC200 Read/OXMIS [X]2ndry?? malignant neoplasm lymph nodes/multi regions diagnostic res27: Metastatic tumour 6
ByuC300 Read/OXMIS [X]Secondary malignant neoplasm/oth? respiratory organs diagnostic res27: Metastatic tumour 6
ByuC400 Read/OXMIS [X]Secondary malignant neoplasm/oth?? digestive organs diagnostic res27: Metastatic tumour 6
ByuC500 Read/OXMIS [X]2ndry malignant neoplasm/bladder??? urinary organs diagnostic res27: Metastatic tumour 6
ByuC600 Read/OXMIS [X]2ndry malignant neoplasm/oth?? parts/nervous system diagnostic res27: Metastatic tumour 6
ByuC700 Read/OXMIS [X]Secondary malignant neoplasm of other specified sites diagnostic res27: Metastatic tumour 6
ByuC800 Read/OXMIS [X]Malignant neoplasm without specification of site diagnostic res27: Metastatic tumour 6

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