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Study Title and Description

Soy and fish oil intake and mortality in a Japanese community.



Key Questions Addressed
2 Observational studies (longitudinal; quantile or continuous analysis)
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Primary Publication Information
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TitleData
Title Soy and fish oil intake and mortality in a Japanese community.
Author Nagata C., Takatsuka N., Shimizu H.
Country Department of Public Health, Gifu University School of Medicine, Japan. chisato@cc.gifu-u.ac.jp
Year 2002
Numbers Pubmed ID: 12397000
2744 (internal)

Secondary Publication Information
There are currently no secondary publications defined for this study.


Extraction Form: Observational Studies
Design Details
Question... Follow Up Answer Follow-up Answer
Study Design Observational: Prospective, longitudinal study of intake (eg, FFQ, biomarker)
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What is the name of this study? (e.g. DART, Physician's Health Study) Takayama Study
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Country in which study conducted (where subjects live) Japan
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Funding source No industry relationship reported (funding or affiliations reported)
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Eligibility Criteria: residents of Takayama, Japan, aged 35 years or older
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Study Population Primary Prevention, Healthy
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Conflict of interest No Data regarding conflict of interest
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Does the study report a subgroup or predictor (regression) analysis for an outcome of interest? ... Which subgroups/predictors? Yes ... Men vs Women
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What type(s) of analysis is/are reported? Baseline intake (eg, from FFQ) vs. outcomes
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Quantiles of baseline measures
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Study start date(s) 1992
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Race nd
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Dropouts, withdrawals, etc. 14,427 men and 17, 125 women
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Baseline characteristics, continuous men=54.0, women=55.1
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skip
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men=12.1, women=13.0
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nd
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nd
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nd
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nd
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nd
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nd
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nd
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men=22.5, women=22.0
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men=2.8, women=2.9
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nd
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Baseline Diseases/Conditions men=5.9, women=2.7
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men=18.9, women=17.4
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n3 Source Diet (Total)
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Results & Comparisons

No Results found.

Quality Dimensions
Dimension Value Notes Comments
Selection bias (NOT NESTED CASE CONTROL): Is there clear demonstration that the outcome of interest was not present at the start of the study (baseline)? Yes
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Comparability/Adjustment (ALL OBSERVATIONAL STUDIES): Were the analyses adjusted for confounders (or other factors)? Yes Including diet and CVD risk factors
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Outcome assessment (ALL STUDIES): Were OUTCOME ASSESSORS adequately BLINDED? Low
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Incomplete outcome data (attrition bias) due to amount, nature or handling of incomplete outcome data (ALL STUDIES) Low
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Nutrition, FFQ Baseline intake: Was the dietary assessment instrument (eg, FFQ) described to have measured n-3 FA (ALL STUDIES WITH FFQ)? Yes Measured n-3 FA from ONLY diet
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Nutrition, Baseline data: Were the ranges or distributions of the nutrient exposures adequately reported (ie, quantile means/medians SD and/or ranges) (ALL OBSERVATIONAL STUDIES)? Yes
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Additional Bias: Bias due to problems not covered elsewhere in the table. No
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Do any specific outcomes have a high risk of bias (different than others)? If so, describe in Notes. No
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Quality Rating
No quality rating data was found.