Table 2.

Estimated mean chemistries by fast-fed N and IH standard errors and confidence intervals based on robust variance estimates to account for within subject correlation

	Fast		Fed		Fed–Fast
	N	IH	N	IH	N	IH
FECa, %	1.63 ± 0.14	2.77 ± 0.17	2.9 ± 0.22	5.31 ± 0.32	1.26 (0.83, 1.69)*	2.54 (2.04, 3.04)*
PTH	34.9 ± 3	38.7 ± 2.7	28.7 ± 1.6	29 ± 1.6	−6.26 (−10.91, −1.6)*	−9.65 (−12.91, −6.4)*
SCa, mmol	2.34 ± 0.016	2.31 ± 0.014	2.37 ± 0.014	2.38 ± 0.017	0.032 (0.018, 0.046)*	0.068 (0.049, 0.086)*
Serum insulin	39.8 ± 4.9	48.2 ± 5.6	206.1 ± 15.4	259.9 ± 25.7	166.3 (142.2, 190.4)*	211.7 (169.5, 253.9)*
Urine Ca, mmol/h	0.14 ± 0.01	0.23 ± 0.02	0.26 ± 0.02	0.48 ± 0.03	0.115 (0.078, 0.152)*	0.25 (0.198, 0.301)*
Filtered Ca, mmol/h	9.5 ± 0.8	8.7 ± 0.5	9.1 ± 0.4	9.2 ± 0.4	−0.45 (−1.95, 1.05)	0.44 (−0.4, 1.28)

Values are means ± SE; 95% confidence interval (CI) are in parentheses. FECa, fractional excretion of calcium; SCa, serum Ca; PTH, parathyroid hormone; N, normal; IH, idiopathic hypercalciuria. Italics: differs from fast, same group; underline: differs from N, same meal period.

^*Change differs from 0.