Can historical controls be used in current clinical trials in osteosarcoma. Analysis of prognostic factors
- Karolinska Hospital, Stockholm, Sweden
A comparison with respect to possible prognostic factors has been made between a contemporary group of 44 patients with osteosarcoma in Sweden, who received treatment since 1971, and a historical group of 35 such patients treated prior to 1972. Only patients with no evidence of metastases on admission were included in the material. The female/male ratio was lower, but not significantly so, for the contemporary group. The mean age was similar in the two groups. Pain was the most common symptom in both groups. The site patterns differed slightly, although not significantly so, in the two groups, there was a higher ratio of frequency of femoral and lower leg tumors for the historical group than for the contemporary group. The variability in tumor size was greater for the historical group, as was the tumor diameter. The historical group had a greater proportion of osteoblastic tumors and these tended to be more malignant. On the whole the prognosis would be expected to be less favorable for the historical group and there would seem to be a definite risk in using this group as a control group to the adjuvant interferon treated patients.
- OSTI ID:
- 6919873
- Journal Information:
- Int. J. Radiat. Oncol., Biol. Phys.; (United States), Journal Name: Int. J. Radiat. Oncol., Biol. Phys.; (United States) Vol. 6:12; ISSN IOBPD
- Country of Publication:
- United States
- Language:
- English
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