Potato Consumption and Risk of Mortality

• ClinicalTrials.gov Identifier: NCT03817944
• Recruitment Status: Completed
• First Posted: January 28, 2019
• Last Update Posted: January 28, 2019
• Sponsor: Zhejiang University
• Information provided by (Responsible Party): Yu Zhang, Zhejiang University

Study Description

Brief Summary:

Although previous studies have linked fried potato consumption with the incidence of mortality in the US population, the association between potato consumption and mortality in the Chinese population remains unknown.

Condition or disease
Morality

Detailed Description:

This study investigated the association of potato, fried potato, unfried potato, and sweet potato consumption with the incidence of mortality in the China Health and Nutrition Survey (CHNS).We analyzed the CHNS data and the participants (n = 14,116) over 20 years old were followed for up to 22 years. The participants were initially free of cancer, myocardial infarction, apoplexy, and pregnancy. Potato consumption was assessed using validated semi-quantitative food questionnaires (FFQ) in interviews. In each wave of interviews, the participants' situations such as alive, dead, or dying was listed and the death months were recorded. Hazard ratios (HRs) and 95% confidence intervals (95% CIs) were estimated using Cox proportional hazard models with adjustment of potential confounders.In the CHNS cohort, total potato, fried potato, unfried potato, and sweet potato consumption were all strongly associated with a reduction in all-cause mortality in both Chinese women and men.

Study Design

• Study Type: Observational
• Actual Enrollment: 14116 participants
• Observational Model: Cohort
• Time Perspective: Prospective
• Official Title: Potato Consumption and Mortality in Oriental Population: A 22-Year Longitudinal Nationwide Cohort Study
• Actual Study Start Date: January 1, 1989
• Actual Primary Completion Date: December 31, 2011
• Actual Study Completion Date: January 1, 2019

Groups and Cohorts

Outcome Measures

Primary Outcome Measures :

1. mortality [ Time Frame: From entry into the study (baseline: 1989-2009) until 2011 ]
   All-cause mortality was the primary outcome of interest in this study. In the CHNS, mortality status was confirmed by reported information in each round of the survey. For each participant, the household register updated the information if they were alive and still present, dying, or dead, and the month of death was recorded. Years of follow-up were calculated from baseline until death or censoring on December 31, 2011, depending on which came first.

Secondary Outcome Measures :

1. Potato consumption [ Time Frame: From entry into the study (baseline: 1989-2009) until 2011 ]
   The frequency and the quantity of daily average consumption of total potatoes, sweet potatoes, fried potatoes, and unfried potatoes (g/day) based on 3-day 24-hr recall

Eligibility Criteria

• Ages Eligible for Study: 20 Years to 93 Years (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes
• Sampling Method: Probability Sample

Study Population

Of the 14,116 participants, 6,493 male and 7,623 female were enrolled, ranging from 20 to 93 years old. People who consumed the potatoes, sweet potatoes, stir-fried potatoes, and non stir-fried potatoes accounted for 57.52%, 14.6%,51.53%, and 54.82%, respectively.

Criteria

Inclusion Criteria:

• Adults aged 20-93 with complete data on diet and follow-up time
• Adults with no chronic disease history

Exclusion Criteria:

• younger than 20 years old
• been reported to be pregnant , to have with myocardial infraction , apoplexy, and cancers

Contacts and Locations

Sponsors and Collaborators

Zhejiang University

Investigators

• Study Director: Jingjing Jiao, PhD; Zhejiang University

More Information

• Responsible Party: Yu Zhang, Professor, Zhejiang University
• ClinicalTrials.gov Identifier: NCT03817944
• Other Study ID Numbers: CHNS-Cohort-Potato-Mortality
• First Posted: January 28, 2019
• Last Update Posted: January 28, 2019
• Last Verified: January 2019

• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Yu Zhang, Zhejiang University:

potato consumption; CHNS; mortality; fried potato; sweet potato