Table 2.

Adherence to baseline and follow-up studies.

Variables	Values N = 24,094
Baseline monitoring (%)
Thyroid function tests	10,468 (43.4)
Electrolytes	14,050 (58.3)
Liver function tests	11,712 (48.6)
Chest X-ray	4,965 (20.6)
Electrocardiogram	3,584 (14.9)
All required studies	742 (3.1)
Follow-up studies every 6 months
Thyroid function tests	16,969 (70.4)
Electrolytes	21,282 (88.3)
Liver function tests	19,039 (79.0)
All required studies	15,332 (63.6)
Mean annual frequnecy *
Primary care physician visits	5.79 ± 7.86
Ophthalmology clinic visits	2.09 ± 4.11
Pulmonary clinic visits	0.36 ± 1.45
Pulmonary function tests	0.12 ± 0.52
Thyroid function tests	4.99 ± 6.11
Electrolytes	12.58 ± 18.66
Creatine kinase	2.94 ± 5.53
Liver function tests	8.88 ± 13.38
Chest X-ray studies	2.06 ± 4.26
Electorcardiogram	1.22 ± 4.26

^*The data is presented as mean ± standard deviation.