Table 5. Fixed effects parameter estimates and standard errors for each section of the knot trajectory model given by Eq. (5).

Section 1, typically increasing trajectory (years 0–50), Section 2, typically decreasing trajectory (years > 50).

	Section 1			Section 2
Parameter	Estimate	S.E	P-value	Estimate	S.E	P-value
d 1	−0.2753	0.03019	<0.0001	0.0188	0.00447	<0.0001
d 2	−0.0027	0.00025	<0.0001	−0.0003	0.00014	0.0328
d 3	0.1864	0.00236	<0.0001	0.9719	0.00391	<0.0001
d 4	−0.0039	0.00012	<0.0001	0.0002	0.00004	<0.0001
d 5	0.1294	0.00097	<0.0001	−0.0357	0.00255	<0.0001
d 6	0.2498	0.00927	<0.0001	−0.0033	0.00149	0.0252
d 7	0.0064	0.00211	0.0024
d 8	0.0036	0.00015	<0.0001
d 9	0.0009	0.00009	<0.0001	0.0001	0.00004	0.0074