From: Thyroid V40 is a good predictor for subclinical hypothyroidism in patients with nasopharyngeal carcinoma after intensity modulated radiation therapy: a randomized clinical trial
Variable
Thyroid dose-volume constraint
P value
Yes (N = 46)
No (N = 46)
Subclinical hypothyroidism [n (%)]
0.023
Yes
9 (19.6)
19 (41.3)
No
37 (80.4)
27 (58.7)
Clinical hypothyroidism [n (%)]
0.058
8 (17.4)
16 (34.8%)
38 (82.6)
30 (65.2)