Year | Number of patients | Tumour volume (mm3) (mean (SD)) | Previous surgery | Marginal dose (Gy) | Number of isocentres | Follow up (months) | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Median | Mean | (SD) | Median | Mean | (SD) | Median | Mean | (SD) | ||||
Tumour volumes were significantly larger in 1996 than in subsequent years (p<0.05), but in other respects treatment variables altered little during this period. | ||||||||||||
Patient details by year. | ||||||||||||
1996 | 47 | 5370 (5230) | 23% | 15 | 14.6 | (1.5) | 6 | 5.7 | (2.1) | 59 | 53 | (17) |
1997 | 37 | 2650 (3200) | 35% | 15 | 14.6 | (1.5) | 6 | 5.6 | (2.3) | 47 | 47 | (8) |
1998 | 59 | 3350 (4300) | 32% | 15 | 14.8 | (1.1) | 5 | 5.3 | (2.2) | 36 | 35 | (9) |
1999 | 91 | 3530 (3930) | 16% | 15 | 14.4 | (1.3) | 6 | 5.7 | (2.6) | 24 | 23 | (7) |