Table 2. Univariate predictors of receiving adjuvant chemotherapy among the 360 patients aged 65 or older with non-metastatic resected gastric cancer.
| Covariate | Odd Ratio | 95% Cl | P |
| Age at diagnosis | 0.007* | ||
| 65–70 years | 1.00 | Referent | - |
| >70 years | 0.51 | 0.33–0.80 | 0.003* |
| Gender | |||
| Male | 1.00 | Referent | - |
| Female | 0.84 | 0.51–1.39 | 0.504 |
| Time of diagnosis | |||
| 1999–2003 | 1.00 | Referent | - |
| 2004–2007 | 1.28 | 0.82–1.98 | 0.275 |
| Chalson index | |||
| 0 | 1.00 | Referent | - |
| 1 | 0.80 | 0.46–1.37 | 0.414 |
| 2+ | 0.29 | 0.06–1.31 | 0.108 |
| Location of tumor | |||
| Proximal | 1.00 | Referent | - |
| Distal | 3.20 | 2.04–5.03 | <0.001* |
| Size | |||
| ≤5 cm | 1.00 | Referent | - |
| >5 cm | 1.06 | 0.68–1.64 | 0.813 |
| Grade | |||
| Well or moderately differentiated | 1.00 | Referent | - |
| Poorly differentiated or undifferentiated | 2.19 | 1.35–3.56 | 0.002* |
| T category | |||
| T1 | 1.00 | Referent | - |
| T2 | 3.67 | 0.73–18.54 | 0.116 |
| T3 | 4.50 | 0.89–22.67 | 0.068 |
| T4 | 5.42 | 1.23–23.86 | 0.025* |
| N category | |||
| N0 | 1.00 | Referent | - |
| N1 | 2.77 | 1.49–5.13 | 0.001* |
| N2 | 3.19 | 1.69–6.00 | <0.001* |
| N3 | 6.28 | 3.27–12.04 | <0.001* |
| AJCC stage | |||
| I | 1.00 | Referent | - |
| II | 1.74 | 0.66–4.58 | 0.259 |
| III | 4.69 | 1.89–11.66 | 0.001* |
Abbreviations: CI, confidence interval; T, tumor; N, lymph node; AJCC, American Joint Committee on Cancer.
*
Statistically significant.