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.
Underactive thyroid (hypothyroidism) Introduction. An underactive thyroid gland (hypothyroidism) is where your thyroid gland doesn't produce enough hormones. Common signs of an underactive thyroid are tiredness, weight gain and feeling depressed. An underactive thyroid can often be successfully treated by taking daily hormone tablets to replace the hormones your thyroid isn't making. There's no way of preventing an underactive thyroid.