An Institutional Review Board (IRB), often referred to in Nigeria as an Health Research Ethics Committee (HREC), is an official committee designated to approve, monitor, and review biomedical and behavioral research involving humans. The primary drive behind establishing these boards is to protect the rights, safety, and well-being of research participants. This oversight stems from historical abuses in human subjects research that exposed vulnerable people to severe harms without their informed consent. In the Nigerian context, health research involving patients, pregnant women, or community members must pass through an accredited IRB to ensure national and international ethical standards are strictly met before any data collection begins.
An effective IRB cannot consist only of medical scientists or researchers. To maintain true objectivity, board membership must be diverse and multidisciplinary. Regulations typically mandate a mix of scientific and non-scientific members, including at least one individual whose primary concern is in a non-scientific area, such as law, ethics, or religion. Furthermore, every IRB must include at least one community member who represents the cultural values and interests of the local population and has no direct affiliation with the institution. This diverse composition prevents institutional bias, ensuring that protocols are scrutinized not just for scientific validity, but for fairness and community acceptability.
Submitting a research protocol to an IRB requires careful preparation of comprehensive documentation. Researchers must provide the main study protocol, informed consent forms in local languages where necessary, recruitment materials, and data collection tools like questionnaires. Once submitted, the board assesses the risk-benefit ratio, making sure that risks to subjects are minimized through sound research design and that any remaining risks are reasonable in relation to anticipated benefits. Midwives planning clinical audits or maternal health studies must ensure their methodology respects patient dignity and maintains strict confidentiality before sending their files to the committee secretariat.
Not every research study requires the same level of scrutiny. IRBs categorize submissions into three main review pathways based on the level of risk involved:
Midwifery research frequently involves vulnerable groups such as pregnant women, fetuses, neonates, adolescents, and economically disadvantaged patients. These populations require special ethical protections because their capacity to give voluntary, uncoerced consent may be compromised by illness, social status, or dependency on healthcare providers. For instance, pregnant women have unique physiological considerations and therapeutic needs, meaning research involving them must carefully weigh maternal and fetal safety. Researchers must demonstrate that knowledge cannot be gained by studying non-vulnerable populations first, and they must eliminate any form of undue influence or perceived coercion during recruitment in antenatal clinics.
An IRB's responsibility does not end once a study protocol is stamped and approved. Investigators must submit annual progress reports for continuing review, detailing participant recruitment numbers, protocol deviations, and any unexpected adverse events. If significant changes are made to the study design—such as adding a new questionnaire or changing the inclusion criteria—the researcher must submit an amendment for IRB approval before implementing those changes. Furthermore, IRBs have the legal and ethical authority to conduct unannounced audits or suspend studies immediately if participant safety is compromised or if ethical violations are uncovered.