Clinical trials and global health equity

Friday, July 12, 2013

What happens when people who previously did not have access are provided with the kind of health care that most of The Lancet’s readership takes for granted? Not very surprisingly, health outcomes are improved: fewer children die when they are vaccinated against preventable diseases; HIV-infected patients survive longer when they are treated with antiretroviral therapy (ART); maternal deaths decline when prenatal care is linked to caesarean sections and anti-haemorrhagic agents to address obstructed labour and its complications; and fewer malaria deaths occur, and drug-resistant strains are slower to emerge, when potent anti-malarials are used in combination rather than as monotherapy. Given that the benefit of these interventions is hardly in dispute, how should global health researchers approach the task of documenting and disseminating their impact in what are these days termed resource-poor settings? What role does a journal have in fostering that process?

It has long been the case that randomized clinical trials have been held up as the gold standard of clinical research. Typically, individuals are randomized to receive one of two treatments; both patients and the clinicians caring for them are blinded to their treatment assignment; outcomes are rigorously measured among all participants. Since the assignment is random, factors ranging from socioeconomic and nutritional status to comorbid disease should be equally distributed within the two groups, so that confounding does not affect the interpretation of results. This kind of study can only be carried out ethically if the intervention being assessed is in equipoise, meaning that the medical community is in genuine doubt about its clinical merits.

Source: The Lancet (link opens in a new window)

Health Care