Table 2.

Multilevel logistic regression analyses for the likelihood of adjuvant chemotherapy treatment among M₀‐pancreatic cancer patients diagnosed between 2008 and 2013 and surgically treated by pancreatoduodenectomy in the Netherlands

Variable	Adjuvant chemotherapyN = 642 (54%)	Odds ratio	95% CI
Sex
Male	329 (54%)	1
Female	313 (54%)	1.06	0.81–1.40
Age
<60 years	201 (71%)	1
60–75 years	409 (57%)	0.48a	0.34–0.67
75 years	32 (16%)	0.06a	0.04–0.10
TNM stage
I	54 (34%)	1
II/III	588 (57%)	2.71a	1.77–4.15
Year of diagnosis
2008	42 (33%)	1
2009	87 (54%)	2.83a	1.61–4.98
2010	84 (52%)	2.85a	1.61–5.05
2011	98 (52%)	3.42a	1.96–5.99
2012	164 (59%)	4.39a	2.59–7.46
2013	167 (61%)	4.63a	2.73–7.87

Corrected for pancreatic center, intercept 0.275, SE 0.127.

^aSignificantly different