This article is part of the network’s archive of useful research information. This article is closed to new comments due to inactivity. We welcome new content which can be done by submitting an article for review or take part in discussions in an open topic or submit a blog post to take your discussions online.
The INTERGROWTH-21st Project involved taking anthropometric measurements, including head circumference, recumbent length and weight of infants, and the stature and weight of parents. In a large, international, multicentre project, it is critical that all study sites follow standardised protocols to ensure maximal validity of the growth and nutrition indicators used. This paper describes, in detal, the selection of anthropometric personnel, equipment, measurement and calibration protocols used to construct the new INTERGROWTH-21st standards.