NCT02770456

Brief Summary

This randomized controlled trial with fish oil supplementation to pregnant women conducted in areas of China, which are generally low in fish intake and low income, aims at answering the following primary questions:

  • Is a dose of 2.0 g/d long chain n-3 fatty acids efficient in preventing preterm birth
  • Is a dose of 0.5 g/d long chain n-3 fatty acids efficient in preventing preterm birth
  • Is a dose of 0.5 g/d as efficient as a dose of 2.0 g/d in affecting timing of spontaneous delivery in the preterm period

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
5,531

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Mar 2008

Longer than P75 for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 1, 2008

Completed
7.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2015

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2016

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

May 11, 2016

Completed
1 day until next milestone

First Posted

Study publicly available on registry

May 12, 2016

Completed
Last Updated

May 12, 2016

Status Verified

May 1, 2016

Enrollment Period

7.8 years

First QC Date

May 11, 2016

Last Update Submit

May 11, 2016

Conditions

Keywords

fish oil, preterm birth, pregnancy, China, prevention

Outcome Measures

Primary Outcomes (1)

  • Premature birth

    Delivery occurring earlier than 259 gestation days

    20 weeks on average, from randomization at gestation weeks 16-24 until on average gestation week 40

Study Arms (3)

High dose fish oil

EXPERIMENTAL

Women will be offered 4 capsules per day containing fish oil

Dietary Supplement: High dose fish oil

Low dose fish oil

EXPERIMENTAL

Women will be offered 4 capsules per day containing mixed fish oil and olive oil

Dietary Supplement: Low dose fish oil

Control

PLACEBO COMPARATOR

Women will be offered 4 capsules per day containing olive oil

Dietary Supplement: Olive oil

Interventions

High dose fish oilDIETARY_SUPPLEMENT

Four 0.72-gram gelatine capsules per day with fish oil providing 2.0 g/d lc-n3FA

High dose fish oil
Low dose fish oilDIETARY_SUPPLEMENT

Four 0.72-gram gelatine capsules per day with a mixture of fish oil and olive oil providing 0.5 g/d lc-n3FA

Low dose fish oil
Olive oilDIETARY_SUPPLEMENT

Four 0.72-gram gelatine capsules per day with olive oil providing 0 g/d lc-n3FA

Control

Eligibility Criteria

Age20 Years - 44 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Pregnancy without known complications

You may not qualify if:

  • Regular user of fish oil
  • Regular user of NSAIDs
  • Known twin pregnancy

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (1)

  • Olsen SF, Halldorsson TI, Li M, Strom M, Mao Y, Che Y, Wang Y, Duan F, Olsen J, Zhou W. Examining the Effect of Fish Oil Supplementation in Chinese Pregnant Women on Gestation Duration and Risk of Preterm Delivery. J Nutr. 2019 Nov 1;149(11):1942-1951. doi: 10.1093/jn/nxz153.

MeSH Terms

Conditions

Premature Birth

Interventions

Fish OilsOlive Oil

Condition Hierarchy (Ancestors)

Obstetric Labor, PrematureObstetric Labor ComplicationsPregnancy ComplicationsFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital Diseases

Intervention Hierarchy (Ancestors)

OilsLipidsDietary Fats, UnsaturatedDietary FatsFatsFats, UnsaturatedPlant OilsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Sjurdur F Olsen, Ph.D.

    Statens Serum Institut

    STUDY DIRECTOR
  • Weijin Zhou, Ph.D.

    Shanghai Institute of Planned Parenthood Research

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 11, 2016

First Posted

May 12, 2016

Study Start

March 1, 2008

Primary Completion

December 1, 2015

Study Completion

April 1, 2016

Last Updated

May 12, 2016

Record last verified: 2016-05

Data Sharing

IPD Sharing
Will share