Here for the Long Haul

If you ever stop by our table at a community event, one of the things that you will hear us talk about repeatedly is how big and how long the National Children’s Study (NCS) is. The NCS is simply the largest and longest study of women and children ever to be conducted in the United States. We have never had a study this big, that lasts this long, or that asks this many questions about mothers’ and children’s health. Studying so many children and pregnant women before, during and after their pregnancy for 21 years may help us answer questions about pregnancy and children’s health.

Why is such a long-term study needed? 

Scientists call long-term studies like the NCS “longitudinal.” Longitudinal studies are generally big undertakings, requiring large numbers of study participants and use of extensive resources for their planning and execution. Longitudinal studies are often considered to give very good results, because they are so long and can look at many different parts of people’s lives. Longitudinal studies are useful for studying changes in individuals over time in contrast to surveys, which provide a snapshot at a single point in time. Time, however, is itself one of the most important explanations of change. Therefore, longitudinal studies can give answers to questions concerning change that one-time surveys cannot.

By following children and families for 21 years or more, the NCS will collect information about health at different ages and stages of growth and in various situations, to possibly shed light on the factors that influence health and development as people grow.

As promised in last week’s post, for the next several weeks, we will be posting some outtakes that did not make it into our final set of Videovoice videos. In this week’s clip, Dr. Clavier talks about the importance of longitudinal studies:

As you heard, other large and long-term studies have really made a difference in our understanding of adult health. For example, the willingness of people in a small town in Massachusetts – Framingham – to take part in a study for more than 20 years showed us why smoking is bad for health, among many other things. To learn more about the Framingham study, check out this blog post.

Other studies have given us some clues about children’s health, but none of them was large enough or lasted long enough to give us the information we really need to understand more about children’s health and well-being. The NCS is different. Because the NCS starts before babies are even born and continues until they are young adults, it can tell us a lot more about what really matters when it comes to what makes kids healthy, makes them sick, or what keeps them safe.

The NCS offers our community the opportunity to take part in the largest long-term study of children ever. An unhealthy community affects everyone. If we can learn through a long-term study how homes, schools, and neighborhoods influence the health and safety of kids, we can perhaps address and prevent many health problems.