Table 1 Characteristics of the included patients, stratified by the mean time interval between radiotherapy and hyperthermia
|  | Short group (n = 30) | Long group (n = 28) | Statistical test | p | ||
|---|---|---|---|---|---|---|
| Â | Median (range) | Median (range) | Â | Â | ||
tint,mean [min] | 65.8 (33.8–79.2) | 91.7 (80.0–125.2) | Mann-Whitney U test | <0.001 | ||
Age [y] | 67.5 (33–90) | 65.0 (29–85) | Mann-Whitney U test | 0.45 | ||
T90,mean [°C] | 40.0 (38.6–41.9) | 40.3 (38.2–41.1) | T-test | 0.71 | ||
HT durationmean [min] | 60.0 (52.6–63.8) | 60.8 (34.5–64.6) | Mann-Whitney U test | 0.16 | ||
Warm-up time [min] | 5.2 (0.75–17.8) | 8.5 (2.75–26.6) | Mann-Whitney U test | 0.001 | ||
| Â | N | % | N | % | Â | Â |
Histology |  |  |  |  | Fisher’s exact test | 1.00 |
 Squamous cell carcinoma | 27 | 90 | 26 | 93 |  |  |
 Adenocarcinoma | 3 | 10 | 2 | 7 |  |  |
Figo stage | Â | Â | Â | Â | Chi-square test | 0.40 |
 IB | 3 | 10 | 4 | 14 |  |  |
 IIA | 1 | 3 | 0 | 0 |  |  |
 IIB | 6 | 20 | 8 | 29 |  |  |
 IIIA | 2 | 7 | 5 | 18 |  |  |
 IIIB | 14 | 47 | 10 | 36 |  |  |
 IVA | 4 | 13 | 1 | 4 |  |  |
Lymph node status |  |  |  |  | Fisher’s exact test | 1.00 |
 Negative | 15 | 50 | 14 | 50 |  |  |
 Positive | 15 | 50 | 14 | 50 |  |  |
Number of hyperthermia treatments |  |  |  |  | Fisher’s exact test | 0.22 |
 4 | 5 | 17 | 9 | 32 |  |  |
 5 | 25 | 83 | 19 | 68 |  |  |
Smoking |  |  |  |  | Fisher’s exact test | 1.00 |
 Yes | 7 | 23 | 7 | 25 |  |  |
 No | 23 | 77 | 21 | 75 |  |  |