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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Am J Kidney Dis. 2011 Feb;57(2):245–254. doi: 10.1053/j.ajkd.2010.09.027

Table 3.

Demographic, Clinical, and Nutrient Characteristics of Participants in the NHS in the Year 2000 Stratified by DASH-Style Pattern Score

Cumulative Averaged DASH-Style Pattern Score
All NHS (N= 3121) Q 1 n=780 Q 2 n=780 Q3 n=781 Q 4 n=780 p-for-trend
Age (years) 67 (62,73) 64 (61, 73) 66 (61, 73) 68 (63, 73) 70 (64, 74) <.001
Caucasian (%) 97.4 96.3 98.0 98.0 97.1 0.08
Hypertension (%) 54.1 56.5 56.3 56.7 48.3 0.001
SBP (mm/hg) in 1990 130 (120, 140) 130 (120, 140) 130 (120, 140) 130 (120, 140) 120 (120, 140) 0.05
DBP (mm/hg) in 1990 105 (70, 80) 80 (70, 88) 80 (70, 88) 80 (70, 80) 80 (70, 80) <.001
Diabetes (%) 23.1 24.6 24.1 26.1 20.3 0.04
High cholesterol (%) 65.0 65.0 63.3 66.1 66.4 0.6
CVD (%) 6.0 6.8 6.3 6.6 5.3 0.6
Current smoker (%) 5.8 11.6 6.0 3.3 2.2 <.001
Ever smoker (%) 52.8 56.3 57.7 50.3 48.4 <.001
Alcohol intake (g/day) 1.7 (0.18, 7.0) 1.4 (0,6.7) 2.0 (0.3,8.0) 1.6 (0.2,6.5) 1.8 (0.2,6.5) 0.03
Calorie intake (kcal/day) 1726 (1468, 2019) 1560 (1301, 1902) 1685 (1447, 1978) 1745 (1496, 2019) 1876 (1628, 2157) <.001
Activity level (METs/wk) 11.4 (3.6, 25.2) 7.7 (1.9, 17.7) 9.8 (3.1, 22.3) 12.7 (4.4, 27.0) 17.7 (7.7, 32.7) <.001
BMI (kg/m2) 26.4 (23, 30.2) 27.1 (23.5, 31.4) 27.1 (23.5, 31.4) 26.3 (23.0, 30.5) 24.9 (22.3, 28.4) <.001
Aspirin use lifetime (g) 748 (98, 3169) 813 (98, 3169) 748 (98, 3169) 569 (98, 2844) 748 (81, 3169) 0.4
NSAID use (lifetime, grams) 60 (10, 1000) 60 (10, 1200) 60 (10, 1200) 60 (10, 900) 50 (10, 760) 0.2
Acetominophen use (lifetime, grams) 98 (33, 1138) 163 (33,1463) 98 (33, 1235) 98 (33, 975) 98 (33, 650) 0.001
ACEi or ARB medication use (%) 21.3 22.9 22.3 23.9 17.2 0.004
Cholesterol lowering medication (ever used by year 2000) 28.8 30.9 27.9 30.4 28.0 0.4
Plasma Cr in 2000 (mg/dl) 0.8 (0.7, 0.9) 0.8 (0.7, 0.9) 0.8 (0.7, 0.9) 0.8 (0.7, 0.9) 0.8 (0.7, 0.9) 0.03
eGFR in 2000 (ml/min/1.73 m2) 76 (65, 88) 77 (65, 89) 75 (64, 88) 75 (64, 86) 77 (66, 89) 0.2
Urinary ACR (mcg/mg) 3.4 (2.0, 6.2) 3.4 (1.9, 6.2) 3.6 (1.9, 5.6) 3.4 (2.1, 6.8) 3.6 (2.1, 6.5) 0.7
Total protein (g/day) 74 (68, 80) 71 (65, 77) 73 (67, 79) 75 (69, 81) 77 (70, 83) <.001
Animal protein (g/day) 53 (46, 59) 52 (46, 58) 53 (47, 59) 53 (47, 59) 53 (46, 60) 0.1
Vegetable protein (g/day) 21 (19, 23) 19 (17, 21) 20 (19, 22) 22 (20, 23) 23 (21, 25) <.001
Total fat (g/day) 56 (50, 61) 61( 56, 65) 57 (53, 61) 54 (50, 59) 49 (45, 54) <.001
Animal fat (g/day) 30 (25, 34) 34 (30, 39) 31 (27, 35) 29 (25, 33) 25 (22, 29) <.001
Sodium (mg/d) 2001 (1801, 2227) 2084 (1893, 3276) 2031 (1831, 2274) 1964 (1788, 2165) 1926 (1730, 2111) <.001
Beta-carotene (mg/day) 4406 (3281, 5930) 3109 (2327,4087) 4037 (3225,5226) 4619 (3730,6011) 5979 (4833,7531) <.001
Median DASH-style pattern score 25 (22, 27) 20 (18, 21) 23 (22, 24) 26 (25, 27) 29 (28, 31) NA

Results expressed as median (25th, 75th percentile), percentage, or median (percentage). Conversion factors for units: Cr in mg/dL to μmol/L, x88.4; eGFR in mL/min/1.73 m2 to mL/s/1.73 m2, x0.01667.

*

p<0.05 or

**

p<0.01 when compared to Q1 as referent group

ACR= albumin-creatinine ratio; eGFR=estimated glomerular filtration rate; Cr, creatinine; NA, Not applicable; SBP, systolic blood pressure; DBP, diastolic blood pressure; ACEi, angiotensin-converting enzyme inhibitor; ARB, angiotensin receptor blocker; ACR, albumin-creatinine ratio; CVD, cardiovascular disease; BMI, body mass index; NSAID, nonsteroidal antiiinflamatory drugs; Q, quartile; MET, metabolic equivalent; NHS, Nurses’ Health Study; DASH, Dietary Approach to Hypertension