Table 2.
Patient Characteristics Associated with Recurrent and Persistent Thyroid Cancer
| Patient characteristic | Patients with recurrent disease |
Patients with persistent disease |
||
|---|---|---|---|---|
| n (%) | Adjusted RRR [CI] | n (%) | Adjusted RRR [CI] | |
| Age at diagnosis (years) | ||||
| ≤44 | 58 (7.1) | Ref | 50 (6.5) | Ref |
| 45–54 | 33 (6.0) | 1.00 [0.62–1.60] | 21 (3.9) | 0.69 [0.40–1.19] |
| 55–64 | 24 (4.6) | 0.83 [0.49–1.40] | 11 (2.2) | 0.34 [0.17–0.68] |
| ≥65 | 22 (5.5) | 0.88 [0.51–1.52] | 13 (3.1) | 0.56 [0.29–1.09] |
| Sex | ||||
| Male | 41 (8.0) | Ref | 22 (4.1) | Ref |
| Female | 96 (5.5) | 0.80 [0.55–1.18] | 73 (4.4) | 1.15 [0.69–1.93] |
| Race | ||||
| White | 101 (5.9) | Ref | 78 (4.8) | Ref |
| Non-white/multiracial | 36 (6.5) | 1.04 [0.68–1.60] | 17 (3.3) | 0.75 [0.41–1.34] |
| Ethnicity | ||||
| Non-Hispanic | 106 (5.8) | Ref | 60 (3.3) | Ref |
| Hispanic | 31 (7.0) | 0.86 [0.55–1.35] | 35 (8.3) | 1.99 [1.23–3.24] |
| T classification | ||||
| T1a | 17 (2.3) | Ref | 23 (2.9) | Ref |
| T1b | 29 (5.4) | 1.94 [1.01–3.73] | 14 (2.7) | 0.74 [0.37–1.48] |
| T2 | 20 (4.9) | 1.83 [0.93–3.62] | 12 (3.0) | 0.84 [0.40–1.75] |
| T3/T4 | 66 (12.2) | 3.48 [1.96–6.20] | 41 (8.1) | 1.99 [1.16–3.42] |
| N classification | ||||
| N0 | 59 (3.5) | Ref | 50 (3.0) | Ref |
| N1 | 78 (15.0) | 3.56 [2.41–5.24] | 44 (9.3) | 2.03 [1.29–3.21] |
RRR, relative risk ratio; CI, 95% confidence interval.