Table 1.
Summary of Demographic Characteristics of Ohio and Polish Samples
| Cohort | Variable | PTC | Control | p-valuea |
|---|---|---|---|---|
| Ohio |
Total |
747 |
1047 |
|
| |
Female |
77% |
69% |
0.0006 |
| |
Male |
23% |
31% |
|
| |
Age (years) |
39.54±14.5 |
46.89±16.2 |
<2×10−16 |
| Polish |
Total |
1795 |
2090 |
|
| |
Female |
90% |
47% |
<2.2×10−16 |
| |
Male |
10% |
53% |
|
| Age (years) | 49.38±14.5 | 36.3±10.6 | <2.2×10−16 |
a
The p-values were obtained by applying permutation tests to compare age and chi-square tests to compare sex.
PTC, papillary thyroid carcinoma; SD, standard deviation.