Leeds Assessment of Neuropathic Symptoms and Signs - LANNS Pain Scale

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 19, 2021

Last Modified: January 27, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements The LANSS Pain Scale, a tool to identify patients in whom neuropathic mechanisms dominate their pain experience.

References

Pain. 2001 May;92(1-2):147-57. doi: 10.1016/s0304-3959(00)00482-6. PMID: 11323136.

Duration

5 minutes

Overview

5 yes/no pain questionnaire questions as well as 2 yes/no sensory testing questions

Summary Data

File Name: lanss_summary.iqdat' (Inquisit Lab: one data file per participant)

Data Fields

NameDescription
inquisit.version Inquisit version number
computer.platform Device platform: win | mac |ios | android
startDate Date the session was run
startTime Time the session was run
subjectId Participant ID
groupId Group number
sessionId Session number
elapsedTime Session duration in ms
completed 0 = Test was not completed
1 = Test was completed
lanssTotalScore 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

Raw Data

File Name: lanss.iqdat

Data Fields

NameDescription
date Date the session was run
time Time the session was run
subject, group, session With the current subject/groupnumber/session id
build Inquisit version number
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)