Table 5 Radioactive Iodine Treatment in patients with thyroid cancer by their risk of recurrence
Variables | Radioactive Iodine Treatment | |||
|---|---|---|---|---|
Yes | No | PR (95% CI) | p value | |
n = 375 (89.3%) | n = 45 (10.7%) |  |  | |
Risk of recurrence | ||||
 - Very low risk (micro PTC) n (%) | 49 (63.6) | 28 (36.4) | 0.2 (0.13, 0.35) | 0.001 |
 - Low risk | 248 (95) | 13 (5) | ||
 - Indeterminate risk | 43 (91.5) | 4 (8.5) | ||
 - High risk | 35 (100) | 0 (0) | ||