Table 3.

Linear regression analysis for plasma citrulline versus CCN per IR dose over days 1 to 6. IR doses 14 and 15 Gy covered days 1 to 5. The estimate referred to the estimated increase in CCN value per one unit (1 μM) increase in plasma citrulline. The p-value of <0.05 (two-sided test) was considered significant. The R² value was generated via linear regression analysis.

Plasma Citrulline versus Corrected Crypt Number
IR Dose	Estimate (CCN)	p-value	R2
6 Gy	0.25	0.0013	0.312
7 Gy	0.39	0.0013	0.314
8 Gy	0.76	0.0008	0.336
9 Gy	1.35	<0.0001	0.754
10 Gy	1.18	<0.0001	0.591
11 Gy	2.22	<0.0001	0.769
12 Gy	1.54	<0.0001	0.853
13 Gy	3.63	<0.0001	0.820
14 Gy	2.16	<0.0001	0.848
15 Gy	2.65	<0.0001	0.801