___________________________________________________________________________________________________________________ *The LANSS Pain Scale* Leeds Assessment of Neuropathic Symptoms and Signs ___________________________________________________________________________________________________________________ Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC Date: 04-19-2021 last updated: 02-24-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 02-24-2022 Millisecond Software ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script implements The LANSS Pain Scale, a tool to identify patients in whom neuropathic mechanisms dominate their pain experience. Reference Bennett M. The LANSS Pain Scale: the Leeds assessment of neuropathic symptoms and signs. Pain. 2001 May;92(1-2):147-57. doi: 10.1016/s0304-3959(00)00482-6. PMID: 11323136. ___________________________________________________________________________________________________________________ OVERVIEW ___________________________________________________________________________________________________________________ 5 yes/no pain questionnaire questions as well as 2 yes/no sensory testing questions ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 5 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) Raw data file: 'lanss.iqdat' date, time: date and time script was run with the current group/subjectnumber subject, group, session: with the current subject/groupnumber/session id build: the Inquisit build q*_response: response given (in assigned values) Scale: yes/no pain questionnaire: q1, q2 (yes = 5); q3 (yes = 3), q4 (yes = 2), q5 (yes = 1). No = 0 points Sensory testing: q1 (yes = 5), q2 (yes = 2) No = 0 points q*_latency: how much time (in ms) the participant spent on the surveypage with this particular question (the last time this particular surveypage was visited) (2) Summary data file: 'lanss_summary.iqdat' (Inquisit Lab: one data file per participant) inquisit.version: Inquisit version run computer.platform: the platform the script was run on (win/mac/ios/android) startDate: date script was run startTime: time script was started subjectid: assigned subject id number groupid: assigned group id number sessionid: assigned session id number elapsedTime: time it took to run script (in ms); measured from onset to offset of script completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) lanss_totalscore: the sum of all individual responses (range: 0 - 24) If score < 12, neuropathic mechanisms are UNLIKELY to be contributing to the patient's pain If score >= 12, neuropathic mechanisms are LIKELY to be contributing to the patient's pain + 7 individual questions pain questionnaire: q1, q2 (yes = 5); q3 (yes = 3), q4 (yes = 2), q5 (yes = 1). No = 0 points Sensory testing: q1 (yes = 5), q2 (yes = 2) No = 0 points