Oral cavity cancer trends over the past 25 years in Hong Kong: a multidirectional statistical analysis

BMC Oral Health

Table 1 Different fits of the models of period (P) and alternative P models

Gender	Model	Number of parameters	d.f.	AIC
Men	P	5	45	464.5
	P-constant	1	49	458.7
	P-linear	2	48	458.9
	P-quadratic	3	47	460.9
Women	P	5	45	340.7
	P-constant	1	49	336.2
	P-linear	2	48	335.6
	P-quadratic	3	47	336.7

Different fits of the models of period (P) and alternative P models of OCC incidence rates (C01-C06) in Hong Kong, from 1986 to 2010. (d.f.: degree of freedom, AIC: Akaike’s Information Criteria, smaller number shows the better fitting)

ISSN: 1472-6831