Impact of surgical volume on nationwide hospital mortality after pancreaticoduodenectomy

Table 3 Logistic regression for hospital mortality

Characteristics	Odds ratio (95% CI)	P value
Surgical volume
Very-low	1.00
Low	0.59 (0.36-0.98)	0.042
Medium	0.61 (0.37-1.01)	0.056
High	0.13 (0.05-0.32)	< 0.001
Very-high	0.16 (0.06-0.41)	< 0.001
Age1	1.04 (1.02-1.06)	< 0.001
Sex		0.329
Male	1.00
Female	1.22 (0.82-1.80)
Type of medical security		0.120
Health insurance	1.00
Medical aid	1.60 (0.89-2.88)
Operation type		0.025
CPD	1.00
PPPD	0.64 (0.43-0.96)

¹Per year increase in age. CI: Confidence Interval; CPD: Classical pancreaticoduodenectomy; PPPD: Pylorus-preserving pancreaticoduodenectomy.