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.
Gravesâ disease. Another condition which causes the swelling of the thyroid gland is Gravesâ disease, which is an autoimmune disease. Here, the antibodies in the immune system would stimulate the thyroid gland to overproduce hormones in the thyroid gland.eople who have a swollen thyroid will manifest one or some of the following symptoms: 1  Migraine. 2  Excessive fatigue. 3  Abnormally heavy menstrual bleeding. 4  Swollen and stiff joints. 5  high cholesterol level. 6  Increased weight. 7  Cramps and weakness in the muscular region. 8  Constipation.