Table 1.

A description of the reference standard M1 and non-M1 cohort

Characteristic	Reference Standard M1
	1 (n = 1285)	0 (n = 1081)
Age
< 50	10.9	6.8
50–54	6.9	5.9
55–59	8.9	8.6
60–64	10.4	10.5
65–69	13.3	11.8
70+	49.6	56.2
Female	35	35.5
Charlson Category
No Prev Hosp	56.9	47.8
0	28.6	30.6
1	12.5	4.7
2+	6.9	11
Tumour Location
Distal	32.9	43.8
Entire	9.8	5.1
GEJ	27.3	23.5
Middle	15.6	17.1
Proximal	9.8	6.9
Unknown	4.7	3.6
Deaths
One year	71.9	32.5
Five years	94.6	64.7