Approximately what percentage of patients respond to phototherapy?

Question: Approximately what percentage of patients respond to phototherapy?
- Keywords:
  patient,
  percentage,
  phototherapy
Asked by Katie to Paul on 8 Mar 2016.
- Paul O'Mahoney answered on 8 Mar 2016:
  
  Approximately 70-80% of patients have a good response to phototherapy, which is quite good!

Question: Approximately what percentage of patients respond to phototherapy?