Table 4.

Data-driven selection of covariates associated with FECa. Variables were chosen using Aikiake's information criteria

Covariate	Derived Value (95% CI)	P Value
SCa (per 0.05)	Slope = 0.294 (0.051, 0.538)	0.018
N*
Food	mmol/h = 1.06 (0.636, 1.484)	<.0001
IH*
Food	mmol/h = 2.123 (1.592, 2.655)	<.0001

Insulin, PTH, subject type × PTH, subject type × insulin, food × PTH, food × SCa, and food × insulin did not enter the regression.

^*Interaction between N and IH was statistically significant (P = 0.0007).