Ethnic differences in the time trend of female breast cancer incidence: Singapore, 1968 – 2002

BMC Cancer

Table 2 Goodness-of-fit measures for APC analyses of breast cancer in Singapore, 1968–2002, stratified by age at diagnosis (Age < 50, Age ≥ 50) and ethnicity.

Population	Model*	Age<50				Age ≥ 50
		Deviance	df	p	AIC	Deviance	df	p	AIC
Chinese women	Age	641.30	30	<0.001	876.98	892.80	36	<0.001	1181.8
Pre: 6296^†	Age + drift	85.65	29	<0.001	323.32	86.65	35	<0.001	377.62
Post: 6707^‡	Age + period	68.52	24	<0.001	316.19	57.17	30	0.002	358.15
	Age + cohort	29.71	20	0.07	285.38	31.07	25	0.19	342.05
	Age + period + cohort	22.61	15	0.09	288.28	22.84	20	0.30	343.82
Malay women	Age	183.09	30	<0.001	352.17	88.79	36	<0.001	268.80
Pre: 885^†	Age + drift	43.11	29	0.04	214.19	39.84	35	0.26	221.86
Post: 628^‡	Age + period	38.05	24	0.03	219.13	37.28	30	0.17	229.29
	Age + cohort	25.98	20	0.17	215.06	30.46	25	0.21	232.47
	Age + period + cohort	22.99	15	0.08	222.07	26.33	20	0.16	238.35
Indian women	Age	37.64	30	0.16	170.41	40.62	36	0.27	199.67
Pre: 335^†	Age + drift	30.60	29	0.38	165.38	22.93	35	0.94	183.98
Post: 418^‡	Age + period	29.41	24	0.21	174.18	21.01	30	0.89	192.06
	Age + cohort	13.99	20	0.83	166.76	11.80	25	0.99	192.85
	Age + period + cohort	13.34	15	0.58	176.12	9.96	20	0.97	201.01

In models for women age below 50, reference groups are: age group 25 – 29; and period 1968 – 1972 and cohort 1926 – 1930 wherever applicable.
In models for women age 50 and above, reference groups are: age group 50 – 54; and period 1968 – 1972 and cohort 1926 – 1930 wherever applicable.
^† Number of ethnic specific breast cancer cases among women below age 50.
^‡ Number of ethnic specific breast cancer cases among women age 50 and above

ISSN: 1471-2407