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Making Sense of IAN CHARTS and Graphs

What are you looking at when you study a graph or table provided by IAN Research? On what is the information you are viewing based?

What does "n" mean?

The letter "n" stands for the number of individuals we are looking at when studying an issue or calculating percentages. You may also see it expressed as "Total Responses."

You may notice that "n" is not always the same, even when we are looking at a specific group, like mothers. There are several reasons for this. First of all, the total number of people participating is changing by the minute! Every time a parent finishes providing data to IAN, our numbers jump, so charts we made between one day and the next will show a slightly different "n."

There is also a difference between the number of the people who have started filling in the current set of IAN questionnaires and the number who have finished them. For some questions, we may consider only those who have finished, while for others we may consider anyone who has begun the process.

Anything that narrows a category will also change our "n."  If we consider only boys or girls, or zero in on a specific diagnosis or age range, that will change the total number of participants under consideration.

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