Comparison of the Safety of First Trimester Abortions Performed by Physicians and Non-Physicians in South Africa and Viet Nam.

Sponsor

World Health Organization (Other)

Overall Status

Completed

CT.gov ID

NCT00370487

Collaborator

University of Cape Town (Other), Hanoi Obstetrics and Gynecology Hospital (Other)

2,860

Enrollment

Duration (Months)

Study Details

Study Description

Brief Summary

There have been no studies in developing countries assessing the safety of midlevel providers (MLP) compared to physicians in performing first-trimester manual vacuum aspiration abortion. In South Africa and Viet Nam, MLP (midwives and physician assistants) are trained and accredited to perform first trimester abortions to increase women's access to safe abortion services. To assess the safety of abortions performed by midlevel provider compared to physicians, complication rates of first-trimester manual vacuum aspiration are compared between types of providers in the two countries. We test the null hypothesis that the two types of providers provide abortions equally safely.

Condition or Disease	Intervention/Treatment	Phase
Abortion, Induced

Detailed Description

Objective

There have been no studies in developing countries assessing the safety of midlevel providers (MLP) compared to physicians in performing first-trimester manual vacuum aspiration abortion. In South Africa and Viet Nam, MLP (midwives and physician assistants) are trained and accredited to perform first trimester abortions to increase women's access to safe abortion services. Complication rates of first-trimester manual vacuum aspiration are compared between types of providers in the two countries.

Methods:

A randomized, two-sided controlled equivalence trial was conducted to compare rates of abortion complications. An a priori margin of equivalence of 4.5% with 80% power and a 95% CI ( = 0.025) was used. Women presenting for an induced abortion at up to 12 weeks' gestation were randomly assigned to a physician or a midlevel provider for manual vacuum aspiration and followed-up 10 to 14 days later. Complications were recorded during the abortion procedure, before discharge from the clinic and at follow-up. The study included 25 providers and 2894 cases, 1160 in South Africa and 1734 in Viet Nam.

Results:

Complication rates were 1.4 per 100 for MLP and 0 for physicians in South Africa. In Viet Nam, complication rates were 1.2 per 100 for MLP and 1.1 per 100 for physicians. In both countries, complication rates satisfied the pre-determined statistical criteria for equivalence. In South Africa, the difference in complication rates for mid-level providers and physicians was 1.4 per 100 (CI=0.4 to 2.7). In Viet Nam, the difference in complication rates for mid-level providers and physicians was 0.1 per 100 (CI= -1.0 to 1.2). There were no major immediate complications. Delayed complications were retained products and infection.

Conclusions:

First trimester manual vacuum aspiration abortions performed by trained and accredited midlevel providers in South Africa and Viet Nam were comparable in safety to those performed by physicians. Given appropriate training, midlevel health care providers can provide first trimester manual vacuum aspiration abortions as safely as physician abortion providers.

Study Design

Study Type:

Observational

Observational Model:

Defined Population

Time Perspective:

Other

Official Title:

Complication Rates of First-Trimester Manual Vacuum Aspiration Abortion Performed by Physicians and Midlevel Providers (MLP) in South Africa and Viet Nam: a Randomised, Controlled, Equivalence Trial.

Study Start Date :

Sep 1, 2003

Study Completion Date :

Jun 1, 2004

Outcome Measures

Primary Outcome Measures

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

Female

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

gestation of no more than 12 weeks as estimated by pelvic examination and date of LMP
age 18 or above
residence within the catchment area specified for each clinic
willing to return to clinic for follow-up visit or agree to a telephone or home-based interview
be able to understand the information given to them and to make personal decisions on whether or not to participate in the study as determined by the study staff
consent given to participate in the study and consent form signed

Exclusion Criteria:

uterine sizing of beyond 12 weeks gestation
under age 18
unwilling or unable to return to clinic for follow-up visit.
unwilling to provide consent for participation in the study

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

World Health Organization
University of Cape Town
Hanoi Obstetrics and Gynecology Hospital

Investigators

Principal Investigator: Margaret Hoffman, M.D., Women's Health Research Unit, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
Principal Investigator: ND Vy, MD, National Hospital of Obstetrics and Gynecology, 43 Trang Thi, Hanoi, Viet Nam
Study Director: My Huong Nguyen, MD, National Hospital of Obstetrics and Gynecology, 43 Trang Thi, Hanoi, Viet Nam
Study Director: Jane Harries, PhD, Women's Health Research Unit, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.