- Cross-tabulation with Chi-square test of age in CEA, CA 125, and CA 15-3 results.
| Tumor markers | n (%) | Chi-square | ||
|---|---|---|---|---|
| Value | df | P-values* | ||
| CEA | ||||
| Abnormal | 150 (2.11) | 274.06 | 7 | 0.0001 |
| Normal | 6866 (97.6) | |||
| CA 125 | ||||
| Abnormal | 375 (5.21) | 48.01 | 7 | 0.0001 |
| Normal | 6641 (94.8) | |||
| CA 13-5 | ||||
| Abnormal | 114 (1.51) | 65.18 | 7 | 0.0001 |
| Normal | 6904 (98.50) | |||
↵* Significant at 0.01 level.
CEA: carcinoembryonic antigen, CA 125: cancer antigen 125, CA 15-3: cancer antigen 15-3