Table 2.

Different model fit for describing tuberculosis mortality in the USA, Japan, and the Netherlands.

Country	Gender	Model	Number of parameters	d.f.	AIC
USA [21]	Total	A	9	360	9,681
		P	41	328	9,823
		AP	49	320	2,884
		APC	63	306	2,735
Japan [22, 23]	Female	A	13	572	8,907
		P	45	540	37,098
		AP	57	528	7,270
		APC	80	505	5,758
	Male	A	13	572	16,358
		P	45	540	33,924
		AP	57	528	14,471
		APC	80	505	9,845
	Total	A	13	572	9,429
		P	45	540	28,800
		AP	57	528	8,207
		APC	80	505	6,081
The Netherlands [24]	Female	A	6	150	3,345
		P	26	130	2,984
		AP	31	125	1,748
		APC	40	116	1,467
	Male	A	6	150	4,095
		P	26	130	3,860
		AP	31	125	1,860
		APC	40	116	1,500
	Total	A	6	150	3,685
		P	26	130	3,292
		AP	31	125	1,763
		APC	40	116	1,465

Note: Each row shows the results from a single model of tuberculosis mortality for the period from 1900–1940, with the corresponding number of parameters and the degree of freedom (d.f). A: age model; P: period model; AP: age-period model; APC: age-period-cohort model. The goodness-of-fit test is assessed using AIC (Akaike's Information Criterion) calculated from each model.