The prevalence of nasal symptoms attributed to XXXX in the United States: findings from the burden of @entity2490 in an America survey.

@entity1 @entity2023 @entity566 @entity25488 @entity2490 @entity9590
Although the annual prevalence of physician-diagnosed @entity2023 has been previously reported, the prevalence of @entity2023 in the United States is uncertain. The purpose of this study was to estimate the prevalence of @entity2023 in the United States. A self-administered 10-item screening questionnaire regarding nasal symptoms was sent to representative households in the United States in January 2004. A total of 8,708 members (44.3%) reported nasal symptoms on > or =7 days in the past 12 months. The majority of these responders described their symptoms as seasonal or perennial @entity566 (n = 5,944) compared with cold or flu only (n = 1,841), cold or flu and @entity25488 (n = 175), or @entity25488 only (n = 748). The prevalence of self-reported seasonal and @entity9590 on > or =7 days in the past 12 months was 30.2%, which corresponds to 89.6 million @entity1 in the United States. The prevalence of self-reported physician-diagnosed seasonal or @entity9590 with symptoms on > or =7 days was 22%, or approximately 65 million @entity1 nationwide. Among responders with a higher burden of nasal symptoms (> or =30 days), the prevalence of physician-diagnosed @entity2023 , @entity2023 , or nasal @entity566 was 11.9% of the total population. The prevalence of nasal symptoms attributed to @entity2490 related to seasonal and perennial @entity566 in the United States ranged between 11.9 and 30.2% depending on duration of symptoms and physician diagnosis. Almost one-half of Americans experience troublesome nasal symptoms on at least 7 days throughout the year, with most attributing their symptoms to @entity566 .
