Because they are relying on a study published in 2006. There may not be another study with such a similar focus in the last 16 years, since it would be hard to justify comparison with less than half the data, or hard to expand the scope of the study with only 50 total years.
Because they are relying on a study published in 2006. There may not be another study with such a similar focus in the last 16 years, since it would be hard to justify comparison with less than half the data, or hard to expand the scope of the study with only 50 total years.
Thank you.
Thank you.
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