Table 5

Multivariable linear regression analyses showing associations between race, region, and nutrients among 12,105 women participating in the Reasons for Geographic and Racial Differences in Stroke study1

Nutrient outcome

Effects of race and region on nutrient intakes

β

95% CI

P value

Adjusted Means (SE)

Fiber (g)

Black

-0.37

(-0.12, -0.61)

0.003

15.1 (0.09) vs. 15.5 (0.07)

[Black vs. white]

Stroke Buckle

-0.61

(-0.33, -0.88)

<0.0001

15.0 (0.1) vs. 15.6 (0.08)

[Stroke Buckle vs. Other]

Stroke Belt

-0.42

(-0.17, -0.66)

0.0009

15.1 (0.08) vs. 15.6 (0.08)

[Stroke Belt vs. Other]

Saturated fat

(% energy)

Black

-1.05

(-0.95, -1.16)

<0.0001

10.0 (0.04) vs. 11.0 (0.03)

[Black vs. white]

Stroke Buckle

-0.20

(-0.08, -0.32)

<0.0009

10.5 (0.05) vs. 10.7 (0.04)

[Stroke Buckle vs. Other]

Stroke Belt

-0.35

(-0.24, -0.46)

<0.0001

10.3 (0.04) vs. 10.7 (0.04)

[Stroke Belt vs. Other]

Trans fat

(% energy)2

Stroke Buckle: Black

-0.06

(-0.16, 0.03)

0.20

2.92 (0.04) vs. 2.98 (0.03)

[Black vs. white]

Stroke Belt: Black

-0.16

(-0.08, -0.25)

0.0002

2.80 (0.02) vs. 3.12 (0.03)

[Black vs. white]

Other: Black

-0.007

(-0.08, 0.06)

0.84

2.80 (0.02) vs. 2.80 (0.03)

[Black vs. white]

Sodium (mg)

Black

-85.23

(-67.6, -102.9)

<0.0009

2042 (6.7) vs. 2122 (5.3)

[Black vs. white]

Stroke Buckle

-36.43

(-16.52, -56.33)

0.003

2067 (8.1) vs. 2103 (6.1)

[Stroke Buckle vs. Other]

Stroke Belt

-36.84

(-18.95, -54.74)

<0.0001

2067 (6.7) vs. 2103 (6.1)

[Stroke Belt vs. Other]

Potassium (g)

Black

-228.3

(-202.7, -253.9)

<0.0001

2375 (9.7) vs. 2593 (7.6)

[Black vs. white]

Stroke Buckle

-98.50

(-69.7, -127.3)

<0.0001

2438 (11.7) vs. 2536 (8.9)

[Stroke Buckle vs. Other]

Stroke Belt

-85.30

(-59.4, -111.2)

<0.0001

2451 (9.7) vs. 2536 (8.9)

[Stroke Belt vs. Other]

Magnesium (mg)

Black

-22.67

(-19.92, -25.43)

<0.0001

246 (1.0) vs. 268 (0.82)

[Black vs. white]

Stroke Buckle

-7.11

(-4.01, -10.21)

<0.0001

253 (1.3) vs. 261 (0.95)

[Stroke Buckle vs. Other]

Stroke Belt

-5.49

(-2.70, -8.28)

0.0001

255 (1.0) vs. 261 (0.95)

[Stroke Belt vs. Other]

Calcium (mg)2

Stroke Buckle: Black

-96.82

(-74.97, -118.7)

<0.0001

540 (8.7) vs. 637 (5.9)

[Black vs. white]

Stroke Belt: Black

-97.83

(-78.90, -116.8)

<0.0001

579 (7.2) vs. 675 (5.5)

[Black vs. white]

Other: Black

-135.56

(-118.8, -152.4)

<0.0001

565 (6.1) vs. 701 (5.3)

[Black vs. white]

Cholesterol (mg)2

Stroke Buckle: Black

-1.22

(-8.61, 6.17)

0.75

183 (2.9) vs. 185 (2.0)

[Black vs. white]

Stroke Belt: Black

-1.81

(-7.84, 4.22)

0.56

186 (2.3) vs. 188 (1.7)

[Black vs. white]

Other: Black

-9.76

(-4.36, -15.15)

0.0004

180 (2.0) vs. 190 (1.7)

[Black vs. white]


1For unstratified analyses, the reference group for race is white and the reference group for region is "other." All models are adjusted for the following covariates: age, total energy, BMI, multivitamin use, menopausal status, hormone therapy use, income, education, marital status, smoking status, alcohol use, physical activity, television viewing, and diagnoses of disease (hypertension, hypercholesterolemia, and diabetes).

2A significant interaction between race and region was detected for trans fat (p = 0.0014), calcium (p < 0.0001), and cholesterol (p = 0.006). These analyses were stratified by region and beta coefficients represent effects for blacks (referent: white)

Newby et al. Nutrition Journal 2012 11:25   doi:10.1186/1475-2891-11-25

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