Clinical Trial: Epidemiological Study of Iron Deficiency and Iron Deficiency Anemia in Chinese Pregnant Women

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Epidemiological Study of Iron Deficiency and Iron Deficiency Anemia Among Pregnant Women: A National Multicenter Survey in China

Brief Summary: The purpose of this study is to know the prevalence of iron deficiency (ID) and iron deficiency anemia (IDA) among pregnant women in Chinese urban district at present, and to analyze the epidemiological characteristics of ID/IDA and influencing factors.

Detailed Summary: This is a national large-scale multi-center cross-sectional survey aimed at investigating the epidemiology of iron deficiency (ID) and iron deficiency anemia (IDA) among Chinese pregnant women in the real world at present, which is anticipated to complete enrollment in two months. A total of 24 hospitals are selected from 6 regions (north, northeast, east, south, southwest, and northwest) of China by the method of multi-stage stratified sampling, each region with one tertiary teaching hospital and three general hospital or health care hospital for women and children. According to the sample size calculation formula combined with the feasibility and flexibility of study, 12000 eligible outpatient pregnant women are expected to be enrolled. Structured questionnaires, which are needed filled in both by patients and doctors, are used to collect participants' data, including basic demographic characteristics (age, occupation, educational level, family income, etc.), reproductive factors (menstrual history, times of pregnancy or parity, history of cesarean section, etc.), pre-pregnancy weight, pregnancy comorbidities and complications, laboratory test of blood routine and serum iron protein, use of iron supplements, diet and living habits during pregnancy, and others. The outcomes are defined by the recommendations on the guidelines for the diagnosis and treatment of Chinese iron deficiency and iron deficiency anemia during gestation period in 2014. All these data are requested to input the electronic data collecting (EDC) system in time and managed level-to-level, with Chinese Evidence-based Medicine Centre finally monitoring the quality of data. During the whole course, no intervention is given to the participants and thus will not have a negative effect on the health and rights of the participants.
Sponsor: West China Hospital

Current Primary Outcome:

  • Iron Deficiency (ID) [ Time Frame: two months ]
    serum ferritin concentration less than 20 μg/L
  • Iron Deficiency Anemia (IDA) [ Time Frame: two months ]
    serum ferritin concentration less than 20 μg/L and hemoglobin less than 110 g/L


Original Primary Outcome: Same as current

Current Secondary Outcome: Use of iron supplements [ Time Frame: two months ]

Iron agent type, dose and duration for preventing or treating ID/IDA


Original Secondary Outcome: Same as current

Information By: West China Hospital

Dates:
Date Received: August 29, 2016
Date Started: September 2016
Date Completion:
Last Updated: March 24, 2017
Last Verified: March 2017