84
criteria and have been recruited in the protocol. Of them, 164 participants exhibited
one out of eight sarcoma subtypes related with an intermediate prognosis and only 15
exhibited one out of two subtypes of the disease related to good prognosis. No patient
with a sarcoma subtype related to poor prognosis has been reported yet. Table 4.1
shows the available data.
Table 4.1: Reported number of successes∕trials for each one of the sarcoma subtypes.
Intermediate Prognosis
subtype successes∕trials
Leiomyosarcoma 6/28
Liposarcoma 7/29
MFH 3/29
Osteosarcoma 5/26
Synovial 3/20
Angiosarcoma 2/15
MPNST 1/5
Fibrosarcoma 1/12
Good Prognosis
Ewing’s 0/13
Rhabdo 0/2
4.3 Non-Exchangeable Product Partition Model
4.3.1 Model Definition
Let yi and N1 respectively denote the number of successes (i.e., patients with positive
outcome) and the total number of patients presenting with sarcoma subtype i, i =