The following death rates were calculated for Arizona and Alaska. What is the most likely reason for this discrepancy?
Crude Death Rates: Arizona = 8.39 per 1000; Alaska = 4.75 per 1000
Age-adjusted Death Rates Arizona = 8.87 per 1000; Alaska 9.34 per 1000
Crude death rates for Arizona is much higher than Alaska but when we age-adjust the data, data figures for Alaska gets higher than Arizona. From such adjustment we can safely say that death-risk increases with age and Arizona has an older population than Alaska. Such age-difference gets nullified when age-adjustment is made.
That's why we can see that Crude death-rate of Arizona is higher than Alaska because of much younger generation of Alaska but as soon as we nullify such age-advantage, Alaskan death-rate jumps up while not much change comes to death-rate of Arizona. Higher death-rate in Alaska could be attributed its harsh natural conditions.
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