2.

不同年龄的CHB患者的良性占位性病变发病率

Incidence of benign liver space-occupying mass in patients with CHB at different ages

Age group (year)	Hepatic cyst (n=2098)	Hepatic hemangioma (n=1457)	Liver cirrhosis nodule (n=3649)
< 20	0.04% (1/250)	1.6% (4/1457)	2.0% (5/250)
20~	1.9% (63/3263)	6.7% (217/3263)	4.6% (150/3263)
30~	8.7% (519/5959)	9.6% (573/5959)	13.3% (794/5959)
40~	15.9% (795/5002)	9.3% (464/5002)	32.2% (1310/5002)
50~	19.5% (439/2251)	6.6% (148/2251)	39.9% (898/2251)
> 60	28.2% (281/996)	5.1% (21/996)	49.7% (492/996)
χ2	855.455	68.707	1181.38
P	0.000	0.000	0.000