<![CDATA[Cancer  is  the  leading  cause  of  death  in  Indonesia.  Generally,  cancer  therapy  use chemotherapy,  radiation,  surgery  or  combination  of  those.  Various  side  effects  caused  by cancer  therapy  make  the  use  of  additional  drugs.  This  leads  to  an  increase  in  total  cost incurred  to  cancer  patients.  The  purpose  of  this  study  was  to  describe  the  treatment  of cancer  therapyâs side effects  as  well  as  the  average  cost  of  side  effects  treatment,  and  its percentage  in  the  total  cost  of  cancer  patients  in  Rumah  Sakit  Margono  Soekarjo.  This research was a descriptive study with retrospective data  by total sampling method obtained from  patientsâ  medical  and  receipts  records  of  five  most  common  cancers  (breast, nasopharynx,  Non  Hodgkins  Lhympoma  (NHL),  ovarian,  and  cervix)  during  January-December 2010. The average cost of  patientâs side effects treatment was calculated by the average  cost  of  side  effects  compared  to  the  average  total  direct  costs  incurred  to  cancer patients.  The  samples  was  obtained  from  the  population  of  2261  patients  who  met  the inclusion criteria, that are 73 patients consist of 62 female patients and 11 male patients. The most  common  side  effects  of  cancer  therapy  were  nausea  and  vomiting  (59.80%),  nausea-vomiting,  anemia,  and  pain  (16.44%),  and  nausea-vomiting  and  anemia  (15.07%).  The  most used therapy was vitamin B complex followed by histamine-2 inhibitor. The average cost of side effects for breast cancer was Rp 1,715,373 (8.73%), nasopharynx was Rp 1,149,049 (6.98 %);  NHL  was  Rp  360,778  (1.97  %);  ovary  was  Rp  911,118  (3.61  %)  and  cervical  was  Rp 1,416,027 (8.87 %). The results indicated  that the hospital needs  to pay  more attention  on nausea-vomiting effect of chemotherapy, and also cervical cancer side effects therapy as the most costly.Keywords: Cost Analysis, Cancer, Side Effects, Prof. Dr. Margono Soekarjo Hospital]]>
