does exposure to aircraft noise increase the risk of hospitalization for cardiovascular disease in older…

does exposure to aircraft noise increase the risk of hospitalization for cardiovascular disease in older people (≥ 65 years) residing near airports? selecting a random sample of approximately 650,000 medicare claims, it was found that about 75,000 people had zip codes near airports and the remaining 575,000 did not. the proportions of hospital admissions related to cardiovascular diseases were computed for those with zip codes near airports and those who did not have zip codes near airports. a larger proportion of admissions for cardiovascular disease was found for older people living in zip codes near airports.\n\nwhich of the following statements is correct?\n○ because of the large sample sizes from each group, we can claim that living in a zip code near an airport is causing the increase in the proportion of admissions for cardiovascular disease.\n○ because this is an experiment, although not a randomized experiment, we can still conclude that living in a zip code near an airport is causing the increase in the proportions of admissions for cardiovascular disease.\n○ since this is an observational study, living in a zip code near an airport may or may not be causing the increase in the proportions of admissions for cardiovascular disease.

does exposure to aircraft noise increase the risk of hospitalization for cardiovascular disease in older people (≥ 65 years) residing near airports? selecting a random sample of approximately 650,000 medicare claims, it was found that about 75,000 people had zip codes near airports and the remaining 575,000 did not. the proportions of hospital admissions related to cardiovascular diseases were computed for those with zip codes near airports and those who did not have zip codes near airports. a larger proportion of admissions for cardiovascular disease was found for older people living in zip codes near airports.\n\nwhich of the following statements is correct?\n○ because of the large sample sizes from each group, we can claim that living in a zip code near an airport is causing the increase in the proportion of admissions for cardiovascular disease.\n○ because this is an experiment, although not a randomized experiment, we can still conclude that living in a zip code near an airport is causing the increase in the proportions of admissions for cardiovascular disease.\n○ since this is an observational study, living in a zip code near an airport may or may not be causing the increase in the proportions of admissions for cardiovascular disease.

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