Table 4.

Parameters for Gompertz-Makeham model and likelihood ratio test results.

	Parameters	L	-		chi2	df	p Value	chi2	df	p Value
Females
		one parameter compared at each time
p35 (X)								Both a and b are constrained
	a	5.39 x 10-9	3.96 x 10-7	1.789		1	0.181
	b	3.89 x 10-1	3.00 x 10-1	1.516		1	0.218
	c	2.08 x 10-2	1.63 x 10-3	59.967		1	<0.001	57.983	1	<0.001
p35 (2)								b is constrained
	a	7.71 x 10-6	2.10 x 10-4	5.234		1	0.022	50.203	1	<0.001
	b	2.41 x 10-1	1.92 x 10-1	1.700		1	0.192
	c	2.52 x 10-2	1.37 x 10-3	50.610		1	<0.001	50.154	1	<0.001
p35 (3)								Both a and b are constrained
	a	3.31 x 10-6	3.00 x 10-6	0.003		1	0.958
	b	2.50 x 10-1	2.46 x 10-1	0.009		1	0.923
	c	1.36 x 10-2	1.80 x 10-4	46.090		1	<0.001	66.787		<0.001