Table 2.

Values used to calculate PrR under different scenarios for the smoothness of the regression model for fecundity, presented for each population separately and for the combined data set

SEPARATE POPULATION ANALYSES
	Age B		Age M		TB		TM		Japan		South Africa
Smoothing function degrees of freedom	JP	SA	JP	SA	JP	SA	JP	SA	PrR	H 0 99% CI	PrR	H 0 99% CI
2.1	9	9	45	38	18.96	18.96	1.09	2.78	0.06	0.00–0.11	0.15	0.00–0.11
2.9	9	9	43	37	18.96	18.96	1.49	3.09	0.08	0.00–0.11	0.16	0.00–0.11
3.7	9	10	43	35	18.96	18.14	1.49	3.76	0.08	0.00–0.09	0.21	0.00–0.11
4.5	9	11	43	33	18.96	17.33	1.49	4.49	0.08	0.00–0.10	0.26	0.00–0.11
5.3	9	12	42	32	18.96	16.55	1.72	4.88	0.09	0.00–0.09	0.29	0.00–0.11
6.1	9	12	42	31	18.96	16.55	1.72	5.29	0.09	0.00–0.06	0.32	0.00–0.10
6.9	9	12	41	30	18.96	16.55	1.96	5.72	0.10	0.00–0.04	0.35	0.00–0.09
7.7	9	12	40	29	18.96	16.55	2.22	6.17	0.12	0.00–0.05	0.37	0.00–0.09
8.5	9	12	40	29	18.96	16.55	2.22	6.17	0.12	0.00–0.04	0.37	0.00–0.04
8.9	9	12	40	29	18.96	16.55	2.22	6.17	0.12	0.00–0.03	0.37	0.00–0.03
COMBINED POPULATION ANALYSIS
Smoothing function degrees of freedom	Age B		Age M		TB		TM		PrR		H 0 99% CI
2.1	9		42		18.96		1.72		0.09		0.00–0.11
2.9	9		41		18.96		1.96		0.10		0.00–0.11
3.7	9		41		18.96		1.96		0.10		0.00–0.11
4.5	10		40		18.14		2.22		0.12		0.00–0.10
5.3	10		40		18.14		2.22		0.12		0.00–0.10
6.1	10		40		18.14		2.22		0.12		0.00–0.10
6.9	10		39		18.14		2.49		0.14		0.00–0.10
7.7	10		39		18.14		2.49		0.14		0.00–0.09
8.5	10		39		18.14		2.49		0.14		0.00–0.07
8.9	10		39		18.14		2.49		0.14		0.00–0.08

See the main text, and Levitis and Lackey [9] for definitions