Table 2 Univariable and multivariable analyses in predicting ablation success
Variable | Univariable analysis | Multivariable analysis | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 3 | Model 4 | |||||||
OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value | |
Age | 1.02 (1.00–1.04) | 0.100 | ||||||||
Sex (vs. male) | 0.97 (0.58–1.61) | 0.894 | ||||||||
Pathology | ||||||||||
Primary tumor size (cm) | 0.85 (0.66–1.08) | 0.189 | ||||||||
T3N0-1b (vs. T1a-2N1b) | 0.93 (0.46–1.81) | 0.823 | ||||||||
Thyroiditis present (vs. absent) | 0.58 (0.33–0.99) | 0.049 | 0.77 (0.34–1.83) | 0.545 | 0.93 (0.4–2.2) | 0.88 | 0.98 (0.42–2.3) | 0.96 | 0.93 (0.40–2.31) | 0.878 |
Assay at ablation | ||||||||||
Tg (vs. > 4.7 ng/mL) | 7.31 (4.20–13.10) | < 0.001 | 12.26 (6.49–24.14) | < 0.001 | 14.72 (7.31–29.62) | < 0.001 | 17.59 (8.28–37.37) | < 0.001 | 18.07 (8.77–40.45) | < 0.001 |
TgAb (vs. > 19.2 IU/mL) | 5.58 (2.99–10.94) | < 0.001 | 8.99 (3.90–22.36) | < 0.001 | 8.12 (3.36–19.62) | < 0.001 | 7.91 (3.25–19.23) | < 0.001 | 7.13 (2.99–18.30) | < 0.001 |
I-131 WBS analysis | ||||||||||
Early WBS neck counta (vs. ≤ 51,814) | 1.75 (1.09–2.82) | 0.022 | 2.16 (1.12–4.2) | 0.022 | 1.14 (0.48–2.70) | 0.772 | ||||
Delayed WBS neck counta (vs. ≤ 4,376) | 2.24 (1.46–3.84) | 0.003 | 3.59 (1.67–7.74) | < 0.001 | 2.93 (1.11–8.05) | 0.032 | ||||
Reduction ratio (vs. > 95.8) (%) | 1.75 (1.07–2.87) | 0.027 | 1.61 (0.85–3.07) | 0.143 | ||||||
Interval between surgery and ablation (months) | 0.98 (0.79–1.24) | 0.887 | ||||||||
AUROC curve (95% CI) | 0.803 (0.752–0.855) | 0.828 (0.779–0.876) | 0.842 (0.796–0.888) | 0.844 (0.798–0.891) | ||||||