Table 3.

Bleeding, multivariate analysis.

	Number of operations	Number of cases (%)	OR (95 % CI)	p-value
Total	163,500	1030 (0.63 %)	–	–
FFLC <20 %	150,113	944 (0.63 %)	Ref	–
FFLC 20–79 %	10,211	79 (0.77 %)	1.22 (0.81–1.84)	0.34
FFLC ≥80 %	3176	7 (0.22 %)	0.34 (0.14–0.84)	0.020
Female	108,447	533 (0.49 %)	Ref
Male	55,053	497 (0.90 %)	1.56 (1.37–1.79)	<0.001
Age <40 years	45,422	146 (0.32 %)	Ref	–
Age 40–49 years	32,577	168 (0.52 %)	1.51 (1.21–1.88)	<0.001
Age 50–64 years	48,289	285 (0.59 %)	1.68 (1.37–2.06)	<0.001
Age ≥65 years	37,212	431 (1.16 %)	3.25 (2.65–3.98)	<0.001
No cholecystitis	131,616	722 (0.55 %)	Ref	–
Cholecystitis	31,884	308 (0.97 %)	1.56 (1.31–1.86)	<0.001