for people ages 18 years and up (full criteria)
Healthy Volunteers
healthy people welcome
at San Francisco, California
study started
completion around
Principal Investigator
by Meir T Marmor, MD
Headshot of Meir T Marmor
Meir T Marmor



The purpose of the current study is to identify the optimal method of collection of pain intensity data. The study will compare three collection methods: a hand-written pain journal, a smartphone app, and a novel electronic pain recorder device. Patients will be randomly assigned to one of three methods and instructed to record their pain level as often as they like. The number of pain intensity recordings per day will then be compared across groups.

Official Title

Comparison of Methods for Recording Post Operative Pain: A Prospective Randomized Trial


Pain is a universal experience and at the forefront of all things medicine; however, the way medical professionals deal with it lacks coherence. Clinicians often ask their patients how their pain is, but seldom document it with enough information to be useful. The purpose of this study is to determine how we can collect the most self-reported pain intensity data. The investigators will collect this data with time and date-stamped Visual Analogue Scale-a pain rating scale from 0-10-scores for each patient in the study, randomized to one of three groups (pen & paper, app, and pain recorder device). As pain is a universal experience and a hallmark sign of many disease states, having a detailed recording of the patient's pain journey is of utmost importance, and understanding that pain with further granularity can only help with the diagnosis of worsening disease, personalization of treatment, and outcomes assessment.


Pain, Postoperative, Pain Recorder, Device, Self-report, Postoperative Pain, Given novel electronic pain recording device, Given Hand-written pain journal, Smartphone app, Hand-written pain journal, Novel electronic pain recording device


You can join if…

Open to people ages 18 years and up

- Patient over 18 years old

You CAN'T join if...

  • Patient cannot use a smartphone
  • Patient cannot use his hands to write or press a button
  • Patient has a nerve catheter (has no pain)
  • Altered mental status
  • Neuropathy causing loss of pain sensation


  • Zuckerberg San Francisco General Hospital
    San Francisco California 94110 United States

Lead Scientist at UCSF

  • Meir T Marmor, MD
    Dr. Meir T. Marmor has a strong clinical interest in the treatment of complex fractures, fracture complications, and fractures in the elderly population, joint replacement surgery, and musculoskeletal ultrasound. His clinical practice involves the use of advanced imaging techniques, computer-assisted and minimally invasive surgery.


not yet accepting patients
Start Date
Completion Date
University of California, San Francisco
Study Type
Expecting 147 study participants
Last Updated