Combination contraceptives: effects on weight.

BACKGROUND: Weight gain is often considered a side effect of combination hormonal contraceptives, and many women and clinicians believe that an association exists. Concern about weight gain can limit the use of this highly effective method of contraception by deterring the initiation of its use and causing early discontinuation among users. However, a causal relationship between combination contraceptives and weight gain has not been established. OBJECTIVES: The aim of the review was to evaluate the potential association between combination contraceptive use and changes in weight. SEARCH METHODS: In November 2013, we searched the computerized databases CENTRAL (The Cochrane Library), MEDLINE, POPLINE, EMBASE, and LILACS for studies of combination contraceptives, as well as ClinicalTrials.gov and International Clinical Trials Registry Platform (ICTRP). For the initial review, we also wrote to known investigators and manufacturers to request information about other published or unpublished trials not discovered in our search. SELECTION CRITERIA: All English-language, randomized controlled trials were eligible if they had at least three treatment cycles and compared a combination contraceptive to a placebo or to a combination contraceptive that differed in drug, dosage, regimen, or study length. DATA COLLECTION AND ANALYSIS: All titles and abstracts located in the literature searches were assessed. Data were entered and analyzed with RevMan. A second author verified the data entered. For continuous data, we calculated the mean difference and 95% confidence interval (CI) for the mean change in weight between baseline and post-treatment measurements using a fixed-effect model. For categorical data, such as the proportion of women who gained or lost more than a specified amount of weight, the Peto odds ratio with 95% CI was calculated. MAIN RESULTS: We found 49 trials that met our inclusion criteria. The trials included 85 weight change comparisons for 52 distinct contraceptive pairs (or placebos). The four trials with a placebo or no intervention group did not find evidence supporting a causal association between combination oral contraceptives or a combination skin patch and weight change. Most comparisons of different combination contraceptives showed no substantial difference in weight. In addition, discontinuation of combination contraceptives because of weight change did not differ between groups where this was studied. AUTHORS' CONCLUSIONS: Available evidence was insufficient to determine the effect of combination contraceptives on weight, but no large effect was evident. Trials to evaluate the link between combination contraceptives and weight change require a placebo or non-hormonal group to control for other factors, including changes in weight over time.

Informed consent: an international researchers' perspective.

We reported 164 researchers' recommendations for information that should be included in the informed consent process. These recommendations were obtained during training workshops conducted in Africa, Europe, and the United States. The 8 elements of informed consent of the US Code of Federal Regulations were used to identify 95 items of information ("points"), most related to benefits and research description. Limited consensus was found among the 3 workshops: of the 95 points, only 27 (28%) were identified as useful by all groups. These points serve as a springboard for identifying information applicable in different geographic areas and indicate the need for involving a variety of individuals and stakeholders, with different research and cultural perspectives, in the development of informed consent, particularly for research undertaken in international settings.

Many worlds, one ethic: design and development of a global research ethics training curriculum.

The demand for basic research ethics training has grown considerably in the past few years. Research and education organizations face the challenge of providing this training with limited resources and training tools available. To meet this need, Family Health International (FHI), a U.S.-based international research organization, recently developed a Research Ethics Training Curriculum (RETC). It was designed as a practical, user-friendly tool that provides basic, up-to-date, standardized training on the ethics of human research. The curriculum can easily be adapted to different audiences and training requirements. The RETC was reviewed by a group of international experts and field tested in five countries. It is available in English, French, and Spanish as a three-ring binder and CD-ROM, as well as on the Web. It may be used as either an interactive self-study program or for group training.