The interval for non-smokers goes from about 0.36 up to 0.48. The interval for the smokers (which starts at 0.55) and the interval for the non-smokers (which ends at 0.48) do not overlap - that is another sign that the differences seen in this study was significant. Statistical Significance and Confidence Intervals
Symptom: Swollen Neck. A goiter is an enlargement of the thyroid gland, As shown here; an enlarged thyroid can be seen as a swelling in the front of the neck. A goiter can occur both as a result of hypothyroidism and hyperthyroidism.It can sometimes also result from tumors or nodules that develop within the thyroid gland.ymptom: Swollen Neck. A goiter is an enlargement of the thyroid gland, As shown here; an enlarged thyroid can be seen as a swelling in the front of the neck. A goiter can occur both as a result of hypothyroidism and hyperthyroidism.
The low thyroid hormone causes the pituitary gland to make more thyroid-stimulating hormone (TSH), which causes the thyroid to swell. Inflammation. Some people develop thyroiditis, an inflammation of the thyroid that can cause a goiter. Nodules. Solid or fluid-containing cysts may appear on the thyroid and cause it to swell. These nodules are often noncancerous. Thyroid Cancer. Cancer may affect the thyroid, which causes swelling on one side of the gland. Thyroid cancer is not as common as the formation of benign nodules. Pregnancy. Being pregnant can sometimes cause the thyroid to become larger. Who Is at Risk for a Goiter? You may be at risk for a goiter if you: Have a family history of thyroid cancer, nodules, and other problems that affect the thyroid.