Written records of mass and height of children?

Written records of mass and height of children are typically kept by healthcare professionals such as pediatricians or family doctors. These records are often maintained in a child's medical file or electronic health record and are used to track growth and development over time. Parents may also keep their own records of their child's mass and height in a baby book or journal. Additionally, schools may keep records of students' mass and height as part of their health and wellness programs.

- The Fels Longitudinal Study: The Fels Longitudinal Study is one of the longest-running studies of child growth and development in the world. It was begun in 1929 by Dr. Lester W. Sontag at the Fels Research Institute in Yellow Springs, Ohio. The study has followed more than 1,000 children from birth to adulthood, collecting data on their physical growth, cognitive development, and social and emotional health. The Fels Longitudinal Study has produced a wealth of information on the factors that influence child growth and development, and it has helped to shape public policy on child health and education.
- The Centers for Disease Control and Prevention (CDC) Growth Charts: The CDC growth charts are a set of standardized charts that are used to track the growth of children from birth to age 20. The charts are based on data from the Fels Longitudinal Study and other studies of child growth and development. The CDC growth charts are used by pediatricians and other healthcare providers to assess the growth of children and to identify any potential growth problems.
- The World Health Organization (WHO) Growth Standards: The WHO growth standards are a set of international growth standards that are used to track the growth of children from birth to age 5. The WHO growth standards are based on data from studies of child growth and development in different countries around the world. The WHO growth standards are used by health workers in over 100 countries to assess the growth of children and to identify any potential growth problems.