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. Author manuscript; available in PMC: 2015 Jun 19.
Published in final edited form as: JAMA Intern Med. 2015 May 1;175(5):755–766. doi: 10.1001/jamainternmed.2014.8347

Table 4. Association of Nut/Peanut Intake With Total Mortality and Cause-Specific Mortality by Race/Ethnicity and Presence/Absence of Metabolic Conditionsa.

Cause of
Death and
Quintile
No
Metabolic Conditions
At Least 1
Metabolic Condition


Descent
(SCCS)b
Asian Ancestry
(SMHS/SWHS)c
Descent
(SCCS)b
Asian Ancestry
(SMHS/SWHS)c


African European African European






No. of
Deaths
Adjusted HR
(95% CI)
No. of
Deaths
Adjusted HR
(95% CI)
No. of
Deaths
Adjusted HR
(95% CI)
No. of
Deaths
Adjusted HR
(95% CI)
No. of
Deaths
Adjusted HR
(95% CI)
No. of
Deaths
Adjusted HR
(95% CI)
Total

Quintile

 1 148 1 [Reference] 83 1 [Reference] 978 1 [Reference] 859 1 [Reference] 379 1 [Reference] 1350 1 [Reference]

 2 180 0.87 (0.69-1.09) 64 0.78 (0.55-1.11) 498 0.75 (0.67-0.84) 802 0.89 (0.80-0.98) 298 0.80 (0.68-0.95) 623 0.87 (0.79-0.96)

 3 123 0.79 (0.61-1.01) 85 0.73 (0.53-1.02) 668 0.82 (0.74-0.91) 569 0.84 (0.75-0.94) 307 0.78 (0.66-0.92) 725 0.75 (0.69-0.83)

 4 154 0.80 (0.63-1.02) 61 0.53 (0.36-0.77) 809 0.83 (0.75-0.91) 663 0.86 (0.77-0.96) 325 0.79 (0.67-0.93) 977 0.79 (0.73-0.86)

 5 162 0.76 (0.59-0.98) 80 0.61 (0.42-0.86) 655 0.83 (0.75-0.92) 598 0.76 (0.68-0.86) 297 0.72 (0.60-0.86) 861 0.83 (0.76-0.91)

P value for trend .03 .001 .001 <.001 <.001 <.001

P value for interactiond

 SMHS/SWHS .24

 SCCS .38 .46

Cancer

Quintile

 1 59 1 [Reference] 29 1 [Reference] 446 1 [Reference] 188 1 [Reference] 69 1 [Reference] 399 1 [Reference]

 2 60 0.74 (0.50-1.08) 23 0.75 (0.40-1.38) 285 0.87 (0.75-1.02) 174 0.93 (0.75-1.16) 76 1.09 (0.77-1.55) 191 0.86 (0.72-1.03)

 3 34 0.54 (0.35-0.85) 27 0.63 (0.34-1.15) 384 0.96 (0.83-1.10) 141 0.98 (0.77-1.24) 75 1.01 (0.71-1.45) 262 0.86 (0.73-1.01)

 4 55 0.73 (0.49-1.09) 20 0.56 (0.29-1.10) 459 0.95 (0.83-1.08) 161 0.97 (0.77-1.22) 66 0.77 (0.52-1.13) 388 0.97 (0.84-1.12)

 5 51 0.61 (0.40-0.94) 23 0.54 (0.29-1.03) 397 1.01 (0.87-1.16) 126 0.79 (0.61-1.01) 90 1.13 (0.77-1.65) 321 0.91 (0.78-1.06)

P value for trend .04 .05 .77 .16 .83 .55

P value for interactiond

 SMHS/SWHS .82

 SCCS .45 .17

CVD

Quintile

 1 24 1 [Reference] 14 1 [Reference] 235 1 [Reference] 298 1 [Reference] 119 1 [Reference] 588 1 [Reference]

 2 27 0.79 (0.44-1.39) 9 0.72 (0.30-1.75) 92 0.65 (0.51-0.84) 272 0.85 (0.72-1.01) 90 0.81 (0.60-1.08) 272 0.90 (0.77-1.04)

 3 21 0.84 (0.45-1.54) 16 0.80 (0.36-1.78) 139 0.79 (0.63-0.97) 193 0.82 (0.68-1.00) 96 0.73 (0.55-0.98) 297 0.73 (0.63-0.84)

 4 31 1.03 (0.58-1.82) 8 0.33 (0.12-0.88) 149 0.70 (0.56-0.86) 205 0.79 (0.65-0.95) 93 0.71 (0.53-0.96) 360 0.69 (0.60-0.79)

 5 21 0.59 (0.31-1.13) 16 0.58 (0.25-1.35) 121 0.72 (0.58-0.91) 216 0.80 (0.66-0.97) 87 0.63 (0.46-0.88) 334 0.77 (0.67-0.89)

P value for trend .34 .10 .003 .01 .004 <.001

P value for interactiond

 SMHS/SWHS .83

 SCCS .08 .62

Ischemic Heart Disease

Quintile

 1 13 1 [Reference] 6 1 [Reference] 45 1 [Reference] 121 1 [Reference] 67 1 [Reference] 151 1 [Reference]

 2 11 0.52 (0.22-1.24) 7 2.27 (0.64-8.10) 23 0.93 (0.56-1.56) 89 0.69 (0.51-0.92) 50 0.78 (0.53-1.16) 69 0.93 (0.70-1.25)

 3 9 0.62 (0.25-1.51) 6 0.89 (0.23-3.35) 23 0.70 (0.42-1.16) 88 1.00 (0.75-1.34) 55 0.72 (0.48-1.07) 81 0.79 (0.60-1.04)

 4 13 0.78 (0.34-1.78) 2 0.20 (0.03-1.22) 41 0.97 (0.63-1.49) 75 0.74 (0.54-1.01) 49 0.70 (0.47-1.06) 92 0.68 (0.52-0.89)

 5 3 0.18 (0.05-0.68) 9 1.06 (0.28-4.03) 30 0.86 (0.53-1.40) 79 0.71 (0.51-0.98) 41 0.59 (0.37-0.93) 76 0.65 (0.49-0.87)

P value for trend .07 .27 .62 .10 .02 <.001

P value for interactiond

 SMHS/SWHS .17

 SCCS .08 .40

Abbreviations: CVD, cardiovascular disease; HR, hazard ratio; SCCS, Southern Community Cohort Study; SMHS, Shanghai Men's Health Study; SWHS, Shanghai Women's Health Study.

a

Nut/peanut intake quintile (Q) cut-points (grams/day): SMHS/SWHS data: Q1 (<0.14), Q2 (0.14 to <0.72), Q3 (0.72 to <1.45), Q4 (1.45 to <2.54), and Q5 (≥2.54). SCCS data: Total nuts and peanut butter: Q1 (<0.95), Q2 (0.95 to <3.08), Q3 (3.08 to <7.30), Q4 (7.30 to <18.45), and Q5 (≥18.45). Nuts only: Q1 (<0.36), Q2 (0.36 to <0.66), Q3 (0.66 to <4.14), Q4 (4.14 to <8.63), and Q5 (≥8.63). Peanut butter only: Q1 (<0.19), Q2 (0.19 to <0.59), Q3 (0.59 to <2.18), Q4 (2.18 to <6.32), and Q5 (≥6.32). One or more of the following conditions were considered metabolic conditions: history of hypertension or heart disease, diabetes mellitus, BMI of 30 or higher (calculated as weight in kilograms divided by height in meters squared), unspecified dyslipidemia (SMHS and SWHS only), or hypercholesterolemia (SCCS only),

b

Model adjusted for age, sex, education, occupation, household income, marital status, smoking pack-years, alcohol consumption, (BMI, physical activity, vitamin supplement use, Charlson Comorbidity Index, total energy intake, red meat intake, chicken intake, seafood intake, vegetable intake, and fruit intake.

c

Model adjusted for age, sex, education, occupation, household income (SMHS) or income per capita (SWHS), smoking status, alcohol consumption (ever/never), BMI, physical activity, regular tea consumption, Charlson Comorbidity Index, total energy intake, red meat intake, chicken/duck intake, seafood intake, vegetable intake, and fruit intake.

d

P interaction: between nut and peanut butter (SCCS) or peanut (SMHS/SWHS) consumption with metabolic conditions.