Table 3.

Adjusted associations of dietary phosphorus with serum phosphorus

	Regression coefficient (95% CI)	P-value
Each 100 mg/day increase of dietary phosphorus	0.009 (0.006, 0.011)	<0.001
Each year increase in age	−0.003 (−0.004, −0.003)	<0.001
Men	−0.157 (−0.1733, −0.141)	<0.001
African-American race	0.017 (−0.000, 0.034)	0.056
Each 100 kcal/day increase	−0.004 (−0.005, −0.002)	<0.001
Each increase in 5% kcal from dietary protein	−0.002 (−0.012, 0.007)	0.620
Time of blood draw
Morning blood draw (7:00 AM–11:59 AM)	Reference
Afternoon blood draw (12:00 PM–16:59 PM)	0.148 (0.129, 0.166)	<0.001
Evening blood draw (1700–2300)	0.195 (0.171, 0.218)	<0.001
Duration of fasting (h)	−0.008 (−0.010, −0.006)	<0.001