Please assess the completion status of the following clinical trial:

Trial Title: A Confirmatory Study of Fentanyl in Participants With Post-herpetic Neuralgia, Complex Regional Pain Syndrome or Postoperative Pain Syndrome

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Participants whose pain because of post-herpetic neuralgia, Complex Regional Pain Syndrome (CRPS) or post-operative pain syndrome is continuing for at least 12 weeks prior to informed consent~* Participants who are continuously taking a non-opioid analgesic at the normal highest dose or more for at least 14 consecutive days prior to informed consent, or at a certain dose (except the use on an as-needed base) on consecutive days or participants who are continuously taking an analgesic adjuvant with a certain dosage and administration (except the use on an as-needed base) for at least 14 consecutive days prior to informed consent~* Participants showing insufficient therapeutic efficacy of the non-opioid analgesic currently being used, and to requiring a continuous opioid analgesic as per the Investigator or Sub-investigator~* Participants with an average pain intensity of 50 millimeter or more on the Visual Analog Scale in 24-hour daily living prior to informed consent~* Participants who can be hospitalized to the 4th day after the initiation of titration period~Exclusion Criteria:~* Participants who had an operation that may affect the assessment within 30 days before informed consent~* Participants whose main cause of the pain to be assessed is considered attributable to psychogenic pain (physical pain that is caused, increased, or prolonged by mental, emotional, or behavioral factors)~* Participants with asthma, bradyarrhythmia (slow irregular heart beat) and severe respiratory function disorders~* Participants complicated with hepatic dysfunction such as fulminant hepatitis (inflammation of the liver) and liver cirrhosis (serious liver disorder in which connective tissue replaces normal liver tissue, and liver failure often occurs), or renal impairment such as nephritic syndrome, acute renal failure, and chronic renal failure~* Participants with a history of hypersensitivity to fentanyl and other opioid analgesics

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Fentanyl (Titration period) (Type: EXPERIMENTAL): One-day adhesive transdermal patch (patch containing a drug that is put on the skin so the drug will enter the body through the skin) containing fentanyl (JNS020QD) applied to chest, abdomen, upper arm and thigh and replaced every day, starting at the dose of 12.5 microgram per hour (mcg/hr) for at least first 2 days, which will be increased by 12.5 mcg/hr at one time based on the medical examination of number of rescue treatments and visual analog scale (VAS) score of the participants. The dose will be increased up to maximum of 50 mcg/hr. The treatment will continue for 10-29 days and then the eligible participants from this group will be randomly assigned to either of the two groups in the double-blind period.
- Fentanyl (Double-blind period) (Type: EXPERIMENTAL): Participants meeting the pre-defined criteria for transfer from titration period to double-blind period and randomly assigned to fentanyl group, will be administered one-day adhesive transdermal patch containing fentanyl, applied to chest, abdomen, upper arm and thigh and replaced every day, the dose of which will be same as the final application dose in the titration period (in the range of 12.5 to 50 mcg/hr). The treatment will be continued for 12 weeks.
- Placebo (Double-blind period) (Type: PLACEBO_COMPARATOR): Participants meeting the pre-defined criteria for transfer from titration period to double-blind period and randomly assigned to placebo group, will be administered one-day adhesive transdermal placebo patch indistinguishable from fentanyl in appearance, applied to chest, abdomen, upper arm and thigh and replaced every day. The dose of fentanyl (from titration period) will be gradually decreased to prevent withdrawal symptoms and the dose of the matching placebo will be gradually increased up to same dose as the final application dose in the titration period (in the range of 12.5 to 50 mcg/hr). The treatment will continue for 12 weeks.

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: complete