Study to Evaluate Effectiveness and Tolerability of OROS Hydromorphone for Cancer Pain Treatment in Korean Patients

Type= exact number, unit= mg, number= 4, form= tablet, route= oral, administered from 1st evaluation day (Day 1) to 2nd evaluation day (Day 15±2). Dosage adjustment: If NRS (Numeric Rating Scale) =4 or more then dose can be increased by 4mg until the average pain intensity for the past 24 hours is adjusted to lower than NRS 3. For the treatment of breakthrough pain, if necessary the one-time administration dose of quick-effect OROS Hydromorphone shall be 2mg up to the daily dosage of the study medicine, 12mg.