Table 1.

Number of patients eligible for analysis and number excluded, for adults (15–99 years) diagnosed with one of six cancers in England during 1991–2006

Malignancy	ICD-10 code*	Eligible for analysis	Exclusions			Patients included
			Zero
			DCO†	Survival‡	Other§	Number (%)
Oesophagus	C15	93 279	4960	1702	626	85 991 (92.2)
Stomach	C16	127 376	9377	3334	948	113 757 (89.3)
Colon	C18	284 858	16 732	6622	4761	256 743 (90.1)
Lung	C33, C34	511 491	45 725	18 574	4979	442 213 (86.5)
Breast (women)	C50	536 526	15 674	4650	18 773	497 429 (92.7)
Cervix	C53	42 764	965	316	624	40 859 (95.5)

^*International Classification of Diseases, tenth revision.

^†Registration from a death certificate only (DCO).

^‡Date of diagnosis equal to date of death but not flagged as a DCO registration.

^§Aged 100 years or over at diagnosis, sex or vital status unknown, sex-site error, invalid dates, duplicate registration, synchronous tumours, previous cancer of the same organ or tissue since 1971, or missing geographical data.