Impact of the Management and Proportion of Lost to Follow-Up Cases on Cancer Survival Estimates for Small Population-Based Cancer Registries

Table 1

Numbers of complete cases available for analysis, number of cumulative deaths by time to follow-up, and 1-, 3-, and 5-year overall and net survival by cancer localization based on complete case analysis.

Cancer localization		Cumulative deaths (y)			Overall survival (y)			Net survival (y)
		1	3	5	1	3	5	1	3	5
Stomach	1188	707	887	920	0.39	0.22	0.19	0.40	0.24	0.21
Colon	759	255	364	404	0.66	0.50	0.44	0.67	0.54	0.50
Thyroid gland	977	43	60	72	0.96	0.94	0.92	0.96	0.96	0.95