Lack of active follow-up of cancer patients in Chennai, India: implications for population-based survival estimates
Rajaraman Swaminathan, Ranganathan Rama, Viswanathan Shanta
Volume 86, Number 7, July 2008, 509-515
Table 1. Survival status of incident cancer cases registered in 1990–1999 and followed through 2001, PBCR, Chennai, India
| Tumour site/type | Cases included in survivalanalysis | Passive follow-up |
Active follow-up |
||||
|---|---|---|---|---|---|---|---|
| Matched deaths (%) | Additional deaths identified (%) | Cases alive at closing date (%) | Survival status unknown at closing date (%) | ||||
| Lip | 86 | 19.8 | 33.7 | 11.6 | 34.9 | ||
| Tongue | 988 | 37.6 | 32.5 | 5.5 | 24.4 | ||
| Oral cavity | 1662 | 31.8 | 31.5 | 10.2 | 26.5 | ||
| Tonsil | 250 | 42.8 | 42.8 | 6.4 | 8.0 | ||
| Hypopharynx | 1017 | 41.4 | 40.5 | 5.8 | 12.3 | ||
| Oesophagus | 2016 | 51.0 | 36.3 | 2.9 | 9.8 | ||
| Stomach | 2681 | 51.9 | 33.0 | 4.5 | 10.6 | ||
| Pancreas | 328 | 57.9 | 30.8 | 7.0 | 4.3 | ||
| Larynx | 722 | 40.2 | 23.0 | 19.6 | 17.2 | ||
| Lung | 1806 | 59.2 | 28.0 | 2.4 | 10.4 | ||
| Breast | 3067 | 28.5 | 20.0 | 28.2 | 23.3 | ||
| Cervix | 4438 | 25.5 | 16.7 | 19.8 | 38.0 | ||
| Ovary | 808 | 39.7 | 20.5 | 17.2 | 22.6 | ||
| Urinary bladder | 442 | 38.9 | 30.1 | 14.0 | 17.0 | ||
| Hodgkin lymphoma | 298 | 30.9 | 26.5 | 24.8 | 17.8 | ||
| Non-Hodgkin lymphoma | 868 | 44.1 | 25.2 | 15.0 | 15.7 | ||
| Lymphoid leukaemia | 433 | 45.5 | 29.1 | 11.3 | 14.1 | ||
| Myeloid leukaemia | 465 | 59.6 | 18.9 | 7.5 | 14.0 | ||
| Leukaemia, type unspecified | 85 | 65.9 | 15.3 | 5.9 | 12.9 | ||
PBCR, population-based cancer registry.