Table 2 Model 1 multivariable linear regression*.

Area	Element	Estimate	SE	t value	Pr (> (\|t\|)
Precipitate	(Intercept)	0.0006	0.0004	1.7	0.08
	P	1.0294	0.0481	21.3	< 2 × 10^–16
	Ca	0.1147	0.0481	4.6	4 × 10^–6
	Cl	−0.1579	0.0654	−2.4	0.02
	Cr	−0.0267	0.0543	−0.5	0.6
	Mg	0.0188	0.0269	0.7	0.5
	O	1.0471	0.1043	10.0	< 2 × 10^–16
	Si	−0.8586	0.1119	−7.68	2 × 10^–14
Lipid bodies	(Intercept)	−0.0001	0.0002	−0.8	0.4
	P	0.4015	0.0352	11.4	< 2 × 10^–16
	Ca	0.0287	0.0151	1.9	0.06
	Cl	−0.0212	0.0343	−0.6	0.5
	Cr	0.0068	0.0324	0.2	0.8
	Mg	0.0227	0.0194	1.2	0.2
	O	0.4233	0.0570	7.4	1.6 × 10^–13
	Si	−0.2114	0.0310	−6.8	1.2 × 10^–11
Mitochondria	(Intercept)	0	0.0002	0.2	0.8
	P	0.4713	0.0433	10.9	< 2 × 10^–16
	Ca	0.0792	0.0214	3.7	0.0002
	Cl	0.0491	0.0404	1.2	0.2
	Cr	0.0382	0.0394	1.0	0.3
	Mg	−0.0118	0.0266	−0.4	0.7
	O	0.0998	0.0693	1.4	0.2
	Si	0.0369	0.0623	0.1	0.6
Other	(Intercept)	0.0004	0.0001	3.1	0.002
	P	0.2499	0.0253	9.9	< 2 × 10^–16
	Ca	0.0183	0.0121	1.5	0.1
	Cl	0.0087	0.0300	0.3	0.8
	Cr	0.0163	0.0307	0.5	0.6
	Mg	0.0313	0.0223	1.4	0.2
	O	0.0940	0.0466	2.0	0.04
	Si	0.0122	0.0301	0.4	0.7

*Model 1 was Gd ~ P + Ca + Cl + Cr + Mg + O + Si. Residuals (minimum, median, and maximum) for precipitate, lipid-rich bodies, mitochondria, and other were −0.007, −0.0005, 0.0144; −0.004, −0.0003, 0.0158; −0.004, −0.0001, 0.007; and −0.004, −0.0003, 0.01, respectively. Residual standard of error for electron-dense precipitates was 0.003 on 2265 degrees of freedom, multiple r² 0.29, adjusted r² 0.29, F-statistic 134.1 on 7 and 2265 degrees of freedom, P < 2.2 × 10^–16. Residual standard error for lipid-rich bodies was 0.001 on 2475 degrees of freedom, multiple r² 0.09, adjusted r² 0.09, F-statistic 35.8 on 7 and 1036 degrees of freedom, P < 2.2 × 10^–16. Mitochondrial residual standard error 0.001 on 1036 degrees of freedom, multiple r² 0.14, adjusted r² 0.14, F-statistic 24.8 on 7 and 1036 degrees of freedom, P < 2.2 × 10^–16. For other (presumably intracellular) areas, residual standard of error was 0.001 on 2192 degrees of freedom, multiple r² 0.05, adjusted r² 0.05, F-statistic 16.9 on 7 and 2192 degrees of freedom, P < 2.2 × 10^–16. The Akaike information criterion was −13,958 for precipitate, this model.

Search