Table 1: Patient and tumour demographics.

CharacteristicTotal groupMale Female% of all SBNETs

Site of primary tumor
 Duodenum3302.2
 Jejunum4223
 Ileum131636894.8
 Total1386870
TNM stage at diagnosis
 Stage 10000
 Stage 24313
 Stage 323101316.7
 Stage 491424966
 Stage unknown2013714.5
Median age656764
Age range29–8731–8729–82
Tumour grade
 G1512229
 G2251510
 G3000
 Not available623131
Functional tumour7655
Nonfunctional tumour6245

SBNETs: small bowel NETs.