Adjusting for age, sex, and social class, the prevalence of NIDDM among urban subjects did not differ significantly from that among rural subjects. Increased age, higher socioeconomic class, and higher WHR were proven to be independent risk factors for glucose intolerance in either area.
The frequency of thyroid disease has been surveyed in 300 patients with ulcerative colitis (UC) and 600 controls. The controls were drawn from visitors to the general medical wards of the Radcliffe Infirmary and were matched for age and sex with the UC patients. Two observers independently assessed all these subjects for thyroid enlargement of the simple goitre type. Although there were minor variations between the results obtained by the two observers, they found simple goitre in 8.7–6.3% among the UC patients compared with 4.3–3.3% among the controls; a difference which is significant. A history of thyrotoxicosis was obtained in 3.7% of the UC patients compared with 0.8% of the controls (p < 0.01). In more than half of the UC patients with a history of hyperthyroidism, the hyperthyroidism occurred years before the onset of the colitis. It is therefore highly unlikely that hyperthyroidism is a complication of the colitis. Possible reasons for the association of the two diseases are discussed but it is concluded that no satisfactory explanation exists at present.
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