• danc4498@lemmy.world
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    9 days ago

    Can somebody smarter than me tell me what this is trying to say? There’s a bar for surveillance year and birth year. But, for instance, 2012 is on the graph twice with different values. What does it mean?

    Edit:

    I think I got it. The graph is of “Autism rates in 8 year olds over time”. And the X axis should just be year (in 2 year increments).

    • bleistift2@sopuli.xyz
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      9 days ago

      2012 appears once as a birth year and once as a surveillance year. The graph says that they only ever surveyed 8-year-olds, since the birth year is always 8 less than the surveillance year.

          • jacksilver@lemmy.world
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            9 days ago

            It’s probably a dataset that collected every 2 years, but only labeled every other bar to prevent the graph from being overcrowded.

            Not a great decision, but not terrible.

            Although, I’m a bit concerned for Lemmys graph comprehension skills.

    • Eq0@literature.cafe
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      9 days ago

      Bad graph, they couldn’t decide if the X axis was the birth year of the kids or the year of the test but they give the same information since it’s always 8-year-old kids being tested. Anyways, they wrote the year of the test first and second the year of birth.