Table 1.

Demographic and dietary factors by quintile of DASH score by cohort

FactorHPFS (n = 1049)NHS I (n = 1277)NHS II (n = 1100)
Q1Q2Q3Q4Q5Q1Q2Q3Q4Q5Q1Q2Q3Q4Q5
Age (years)626364656566656766684849505150
BMI (kg/m2)26.926.326.325.825.326.827.226.727.326.028.227.727.126.726.3
History of kidney stones (%)675763546276727166627468635256
History of hypertension (%)373733413252495247442225192422
History of diabetes (%)436997111211943665
Thiazide use (%)789101013161717191516161611
DASH score components
    fruit (servings/d)1.32.02.53.23.71.31.72.32.83.20.81.31.72.22.7
    vegetables (servings/d)2.12.63.23.84.92.12.73.14.14.81.82.53.24.05.2
    nuts (servings/d)0.50.80.91.21.60.50.70.81.01.30.40.60.91.11.3
    low-fat dairy (servings/d)0.40.50.81.11.30.30.50.81.11.60.20.40.71.11.3
    red and processed meats (servings/d)a1.10.90.80.80.50.90.80.70.70.40.80.70.70.60.4
    whole grains (servings/d)0.61.01.41.92.70.50.91.21.62.10.40.91.01.51.8
    sweetened beverages (servings/d)a0.50.30.30.30.10.60.40.20.20.10.80.40.30.30.2
  • Values are means unless otherwise indicated. Q, DASH score quintile.

  • a In constructing the DASH score, higher intakes of these components received lower scores.