Table 4. Association of age and LN positivity
| OR (95% CI) | ||||||||
|---|---|---|---|---|---|---|---|---|
| T stage T1 | T stage T2 | T stage T3 | T stage T4 | |||||
| Age at diagnosis, y | Unadjusted | Adjusted for covariates* | Unadjusted | Adjusted for covariates* | Unadjusted | Adjusted for covariates* | Unadjusted | Adjusted for covariates* |
| 20–39 vs 60–69 | 2.39 (1.67 to 3.41) | 1.97 (1.36 to 2.86) | 1.74 (1.34 to 2.28) | 1.48 (1.13 to 1.95) | 1.59 (1.35 to 1.86) | 1.30 (1.10 to 1.53) | 1.33 (0.78 to 2.27) | 1.12 (0.65 to 1.95) |
| 40–49 vs 60–69 | 1.68 (1.32 to 2.13) | 1.55 (1.21 to 1.97) | 1.34 (1.15 to 1.57) | 1.22 (1.04 to 1.44) | 1.41 (1.29 to 1.55) | 1.26 (1.15 to 1.39) | 1.22 (0.88 to 1.71) | 1.14 (0.80 to 1.60) |
| 50–59 vs 60–69 | 1.26 (1.05 to 1.52) | 1.19 (0.98 to 1.44) | 1.14 (1.01 to 1.28) | 1.09 (0.96 to 1.22) | 1.18 (1.11 to 1.27) | 1.13 (1.05 to 1.21) | 1.17 (0.89 to 1.53) | 1.11 (0.84 to 1.46) |
| 60–69 (Ref) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 70–79 vs 60–69 | 0.84 (0.70 to 1.01) | 0.85 (0.71 to 1.03) | 0.79 (0.71 to 0.88) | 0.79 (0.71 to 0.88) | 0.88 (0.83 to 0.93) | 0.90 (0.84 to 0.95) | 0.91 (0.72 to 1.16) | 0.92 (0.72 to 1.18) |
| 80+ vs 60–69 | 0.85 (0.66 to 1.08) | 0.85 (0.66 to 1.09) | 0.72 (0.63 to 0.81) | 0.73 (0.64 to 0.83) | 0.77 (0.72 to 0.83) | 0.80 (0.75 to 0.86) | 0.81 (0.63 to 1.04) | 0.84 (0.64 to 1.09) |
| P* | <.0001 | <.0001 | <.0001 | <.0001 | <.0001 | <.0001 | .0429 | .3591 |
* Chi-square P values for age group variable in each logistic regression model. All statistical tests were two-sided. CI = confidence interval; Ref = referent; OR = odds ratio.