Table 2.
Characteristic | Number with recurrence (%) | Univariate P value | Relative risk (95% CI) | Multivariate P value |
---|---|---|---|---|
Age | ||||
≥45 years | 10/207 (4.8) | |||
<45 years | 30/200 (15.0) | 0.042 | NS | |
Gender | ||||
Male | 7/86 (8.1) | |||
Female | 33/321 (10.3) | 0.248 | NS | |
Multifocal tumor | ||||
Yes | 20/188 (10.6) | 0.462 | NS | |
No | 20/219 (9.1) | |||
Capsular invasion | ||||
Yes | 15/126 (11.9) | 0.389 | NS | |
No | 25/281 (8.9) | |||
Vascular Invasion | ||||
Yes | 3/14 (21.4) | 0.823 | NS | |
No | 37/393 (9.4) | |||
Soft tissue invasion | ||||
Yes | 8/68 (11.8) | 0.937 | NS | |
No | 32/339 (9.4) | |||
Positive surgical margin | ||||
Yes | 8/73 (11.0) | 0.654 | NS | |
No | 32/334 (9.6) | |||
Positive lymph nodes | ||||
Yes | 19/153 (12.4) | 0.4266 | 2.3 (1.2–4.6) | 0.0150 |
No | 21/252 (8.3) | |||
Tumor size | ||||
>0.8 cm | 25/132 (18.9) | 0.0104 | 2.1 (1.1–4.1) | 0.0250 |
≤0.8 cm | 15/275 (5.5) | |||
I-131 therapy | ||||
No | 20/51 (39.2) | <0.0001 | 8.6 (4.4–17.1) | <0.0001 |
Yes | 20/349 (5.7) |