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

BMC Oral Health

Table 2 Summary of different fits of modified models

Gender	Model	Number of parameters	d.f.	AIC
Men	A	10	40	269.8
	P-constant	1	49	458.7
	C	14	36	294.1
	AP	14	36	275.6
	AP (P-constant)	10	40	269.8
	AC	23	27	285.1
	APC (P-constant)	23	27	285.1
Women	A	10	40	224.3
	P-linear	2	48	335.6
	C	14	36	259.9
	AP	14	36	228.9
	AP (P-linear)	11	39	223.8
	AC	23	27	244.5
	APC (P-linear)	24	27	246.5

Summary of different fits of age (A), best-fitted period (P), cohort (C), age and period (AP), age and cohort (AC), and age, period and cohort (APC) model of OCC incidence rates (C01-C06), from 1986 to 2010. Models whose P effects are extrapolated by the best-fitted P models; hence in men, the AC model equals the APC (P-constant) model. (d.f.: degree of freedom, AIC: Akaike’s Information Criteria)

ISSN: 1472-6831