Incidence of gallstone disease in Italy: Results from a multicenter, population-based Italian study (the MICOL project)

Table 1 Incidence of GD in the different operative units of the MICOL project

Operative unit	Overall % yr	Male	Female
Bologna Loiano	0.50	0.50	0.50
Bologna Brisighella	0.61	0.60	0.80
Bolzano	0.82	0.50	1.10
Castellana Grotte	0.75	0.70	0.80
Tivoli	0.64	0.50	0.70
Modena San Lazzaro	0.43	0.40	0.40
Modena Madonnina	0.86	0.60	1.20
Overall	0.67	0.66	0.81