Table 2.

Diet characteristics among European American and African-American participants in the CRIC study

	European American	African Americana					P valuef
Variables	n=1354	Overall n=1121	Quartile 1b n=284	Quartile 2cn=285	Quartile 3d n=283	Quartile 4e n=269
Kilocalories per day	1808±761g	1904±902	1844±858	1986±930	1915±913	1870±904	0.97
Calories fat, %	35±8h	33±8	34±8	33±8	33±9	32±9	0.002
Calories protein, %	16±4h	15±4	15±4	15±4	15±4	14±4	0.06
Calories carbohydrates, %	48±10h	53±12	51±10	52±11	54±12	54±13	0.001
Calcium (mg/day)	649 [456,908]h	577 [402,837]	574 [396,851]	592 [423,810]	578 [387,837]	558 [389,808]	0.55
Phosphorus (mg/day)	1099 [814,1463]h	1013 [703,1388]	1007 [713,1365]	1051 [742,1461]	993 [681,1415]	1006 [674,1299]	0.26

Results are presented as mean±SD and median (interquartile range). CRIC, Chronic Renal Insufficiency Cohort.

^aAfrican-American data is shown overall and also stratified by quartiles of percentage African ancestry.

^bPercentage African ancestry <73.6%.

^cPercentage African ancestry 73.6%–79.6%.

^dPercentage African ancestry 79.7%–83.8%.

^ePercentage African ancestry >83.8%.

^fP for linear trend or Kruskal–Wallis test across the quartiles of African ancestry among African Americans.

^gP<0.05 comparing European Americans to African Americans.

^hP<0.001 comparing European Americans to African Americans.