Table 3.

Comparison of Cause of Death Groupings Based on NWTS Coding and Death Certificate Information for All Subjects

NWTS-Coded Cause of Death	Cause of Death Grouped on the Basis of Death Certificate ICD Underlying Cause Codes (No. of Deaths)
	Wilms Tumor	Other Cancers	Cardiac Causes	Pulmonary Causes	External Causes	All Other Causes	Missing	Total
Original disease	672	37	4	16	2	33	71	835
Late effects
SMN	4	31	0	0	0	1	2	38
CHF	10	0	7	1	0	0	2	20
ESRD	9	0	2	0	0	7	0	18
Pulmonary	2	1	0	0	0	0	0	3
Other late effects	1	0	0	0	0	4	0	5
Non–treatment-related cause
External	1	0	1	0	20	0	1	23
Medical	1	0	3	0	3	14	8	29
Unknown	3	0	0	0	2	2	0	7
Total	703	69	17	17	27	61	84	978

Abbreviations: NWTS, National Wilms Tumor Study; ICD, International Classification of Diseases; SMN, second malignant neoplasm; CHF, congestive heart failure; ESRD, end-stage renal disease.