Would somebody please help me with my English?
In 2003, a World Health Organization literature review on the impact of pharmaceutical promotion reported that exposure to promotion may influence doctors’ behaviour in ways such as prescribing less appropriately, prescribing more often and adopting new drugs more quickly. These activities may have a direct impact on patients’ health such as when physicians are persuaded to use drugs with commercial information are contrary to scientific literature. X et al. surveyed 85 randomly selected doctors which said that scientific sources are much more important in influencing their prescribing than commercial sources. However, when questioned about the usefulness of two classes of drugs; cerebral and peripheral vasodilators and propohexene where the message from the scientific literature was opposite that in the commercial literature the majority of doctors in this group held commercial beliefs about these two classes.
Promotion also may reduce the quality of healthcare when physicians are convinced to use new drugs with unproven health benefits which may lower the usage of older drugs that have been shown in rigorous clinical trials to improve health outcomes are declining . A study conducted in the USA to describe antihypertensive medication prescribing patterns for 1992 and 1995 found an association between drug advertising and drug usage. In that study, the use of the newest and most expensive agents; calcium channel blockers and angiotensin converting enzyme (ACE) inhibitors increased, while the use of diuretics and beta-blockers, the only two classes of antihypertensive drugs known to have a well documented benefit of reducing the risk of heart attack and stroke declined. This result is contrary to the National Institutes of Health 1993 guidelines for the treatment of hypertension.
with commercial information are contrary to scientific literature- delete 'are'
doctors which said- doctors, who said
where the message from the scientific literature was opposite that in the commercial literature- , ,
was opposite that- was the opposite of that
health benefits which- , which
health outcomes are declining- delete are declining
attack and stroke declined.- stroke,
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