Table 1. Comparison of Clinical and Conventional Imaging Data among Study Subgroups.
| Characteristics | Group 1 (n = 22) | Group 2 (n = 58) | Group 3 (n = 29) | Group 4 (n = 26) | Corrected P |
|---|---|---|---|---|---|
| Age*, years | 42.4 ± 5.7 | 50.3 ± 7.1 | 48.6 ± 6.3 | 49.0 ± 6.9 | 0.25 |
| Male gender (%) | 11 (50.0) | 33 (56.9) | 20 (69.0) | 14 (53.8) | 0.99 |
| KPS* | 87.3 ± 5.7 | 86.9 ± 5.1 | 91.7 ± 5.5 | 90.0 ± 4.9 | 0.40 |
| Preoperative tumor size*, cm3 | 32.9 ± 15.7 | 36.4 ± 14.3 | 39.7 ± 17.1 | 42.8 ± 12.9 | 0.55 |
| Partial resection (vs. biopsy) (%) | 16 (72.7) | 46 (79.3) | 22 (75.9) | 12 (46.2) | 0.10 |
| Postoperative tumor size*, cm3 | 23.6 ± 11.3 | 28.6 ± 12.1 | 31.1 ± 11.5 | 33.9 ± 9.5 | 0.23 |
| Radiation dose at CCRT*, Gy | 58.7 ± 0.4 | 59.1 ± 0.5 | 58.6 ± 0.5 | 59.2 ± 0.3 | 0.99 |
| Adjuvant temocycles* | 4.2 ± 0.7 | 5.2 3 ± 0.5 | 5.2 ± 0.4 | 5.3 ± 0.3 | 0.25 |
| Follow-up periods*, weeks | 71.7 ± 15.9 | 54.0 ± 17.1 | 52.5 ± 16.5 | 51.7 ± 14.1 | 0.045 |
p values were calculated by ANOVA for continuous variables and chi-square test for categorical variables and corrected for multiple comparisons by using Bonferroni correction. *Data are mean ± standard deviation. ANOVA = analysis of variance, CCRT = concurrent chemoradiotherapy, KPS = Karnofsky performance scale