Table 2.

Numbers of cancer deaths (>5 years after start of follow-up) by radiotherapy status and distribution of other risk factors in US peptic ulcer cohort

	Radiotherapy		No radiotherapy
Category	Cancer deaths	Persons at risk	Cancer deaths	Persons at risk
Age at treatment
<35	68	252	87	437
35–44	109	462	110	549
45–54	100	515	71	497
≥55	83	511	59	377
Year of treatment/entry
<1940	48	207	78	534
1940–44	89	373	81	459
1945–49	62	277	96	504
1950–59	139	738	72	363
≥1960	22	145	-	-
Gender
Male	297	1389	266	1423
Female	63	351	61	437
Marital status
Not stated/unknown	4	47	2	9
Never married	33	163	32	234
Married	291	1356	275	1471
Divorced separated	17	63	9	60
Widowed	15	111	9	86
Cigarette smoking status
Unknown	54	301	68	369
Never smoked	78	418	64	499
Smoked	228	1021	195	992
Cigarette smoking quantity
Unknown	137	749	137	903
≤1 pack/day	148	694	134	726
> 1 pack/day	75	297	56	231
Alcohol drinking status
Unknown	66	342	74	424
Never drank	120	574	104	642
Drank	174	824	149	794
Alcohol drinking quantity
Unknown	215	1025	201	1214
≤5 drinks/week	77	404	69	379
6–15 drinks/week	28	143	28	123
>15 drinks/week	40	168	29	144