Table 3.

Fitting of the age-period-cohort models for the hepatocellular carcinoma incidence in urban Shanghai (age groups of 25–29 to 75–79 years, 1976–2005)

Sex	Terms in model	Deviance	df	ΔDeviance	Δdf	P value
Male	Age	3,049.0	124	–	–	–
	Age-drift	2,867.5	123	181.4	1	<0.001
	Age-cohort	884.6	117	1,893.0	6	<0.001
	Age-period-cohort	845.6	111	39.0	6	<0.001
	Age-period	2,837.5	117	−1,991.9	−6	<0.001
	Age-drift	2,867.5	123	−30.0	−6	<0.001
Female	Age	7,674.4	123	–	–	–
	Age-drift	7,652.9	122	21.6	1	<0.001
	Age-cohort	6,926.9	116	726.0	6	<0.001
	Age-period-cohort	5,028.3	110	1,898.6	6	<0.001
	Age-period	5,741.1	116	−712.8	−6	<0.001
	Age-drift	7,652.9	122	−1,911.8	−6	<0.001

df degree of freedom