Table 1.
Patient characteristics according to receipt of radioactive iodine (RAI)
| No RAI | RAI | ||||
|---|---|---|---|---|---|
|
| |||||
| N | % | N | % | p-valuea | |
|
|
|||||
| Total | 1108 | 1252 | |||
| Age at diagnosis | 0.563 | ||||
| 15–19 | 51 | 5% | 64 | 5% | |
| 20–24 | 122 | 11% | 158 | 13% | |
| 25–29 | 230 | 21% | 270 | 22% | |
| 30–34 | 305 | 28% | 341 | 27% | |
| 35–39 | 400 | 36% | 419 | 33% | |
| Median (IQR) | 32 | (27, 36) | 32 | (27, 36) | 0.101 |
| Race | 0.070 | ||||
| White | 877 | 80% | 1000 | 81% | |
| Black | 168 | 15% | 157 | 13% | |
| Other | 58 | 5% | 85 | 7% | |
| Missing/unknown | 5 | 10 | |||
| Marital status at diagnosis | 0.878 | ||||
| Single (never married) | 299 | 32% | 362 | 33% | |
| Marriedb | 566 | 61% | 657 | 60% | |
| Separated/Widowed/Divorced | 64 | 7% | 79 | 7% | |
| Missing/unknown | 179 | 154 | |||
| Summary stage | <0.001 | ||||
| Localized | 908 | 82% | 762 | 61% | |
| Regional | 171 | 15% | 457 | 37% | |
| Distant | 7 | 1% | 21 | 2% | |
| Unstaged | 22 | 2% | 11 | 1% | |
| Missing/unknown | 0 | 1 | |||
| Tumor size, mm | <0.001 | ||||
| 0–9 | 344 | 42% | 134 | 13% | |
| 10–19 | 225 | 27% | 358 | 35% | |
| 20–39 | 189 | 23% | 381 | 38% | |
| 40+ | 64 | 8% | 143 | 14% | |
| Missing/unknown | 286 | 236 | |||
| Median (IQR) | 11 | (5, 22) | 20 | (12, 30) | <0.001 |
a
p-value from Wilcoxon or chi-squared test
b
Includes 'married (including common law)' and 'unmarried or domestic partner (same sex or opposite sex, registered or unregistered, other than common law marriage)'