Thyroid nodularity after childhood irradiation for lymphoid hyperplasia: a comparison of questionnaire and clinical findings

Ionizing radiation is a well-established cause of thyroid cancer and modularity, however, important questions relating to the magnitude of the risk following low-dose medical exposures remain unresolved. To address these issues, we conducted a follow-up study of 1590 individuals treated between 1938 and 1969 with X-rays for childhood lymphoid hyperplasia (av. thyroid DOSE = 24 cGy) and 1499 individuals treated with surgery only. Thyroid nodularity was determined from self-administered questionnaires completed by 1195 irradiated and 1063 surgically-treated subjects and from clinical examinations of 602 irradiated and 457 non-irradiated subjects. A much higher relative risk (RR) for radiation-induced thyroid nodules was estimated from the questionnaire than from the clinical examination data, 15.8 and 2.7, respectively. (The corresponding estimates of excess RR per cGy were 64 and 7%). Analysis of the examination data revealed a strong dose-response relationship, similar excess RR/cGy for males and females, and an inverse relationship with age at exposure. Although the thyroid gland is one of the most sensitive organs to the neoplastic effects of radiation, the radiation-induced risk of thyroid nodularity reported from questionnaire studies may over-estimate the true risk.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/28887/1/0000723.pd

Music education and the well-rounded education provision of the Elementary and Secondary Education Act: A critical policy analysis

Critical approaches to policy analysis, although common in general education, are rare in arts education literature. By adopting critical approaches, researchers can produce scholarship that will be transformative for policies that impact arts education and for the profession as a whole. In this article, I present a framework that allows researchers to incorporate critical theory into policy analysis. This ideological work can expose sources of power and help reveal the ways in which the targets of policy are complicit in their own domination. Adopting this framework, I examine the well-rounded education provision of the Every Student Succeeds Act of 2015 to better understand the policy's origins, its development, and the potential implications for music education.2019-08-0