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Amyotrophic Lateral Sclerosis-specific Quality of Life-short Form (ALSSQOL-SF): A Brief, Reliable, and Valid Version of the ALSSQOL-R

  • Stephanie H. Felgoise
  • , Richard Feinberg
  • , Helen E Stephens
  • , Paul Barkhaus
  • , Kevin Boylan
  • , James Caress
  • , Lora L Clawson
  • , Lauren Elman
  • , Stephen A Goutman
  • , Leo Mccluskey
  • , James Russell
  • , Ezgi Tiryaki
  • , Michael Weiss
  • , Zachary Simmons

Research output: Contribution to journalArticlepeer-review

Abstract

INTRODUCTION: The Amyotrophic Lateral Sclerosis (ALS)-Specific Quality of Life instrument and its revised version (ALSSQOL and ALSSQOL-R) have strong psychometric properties, and have demonstrated research and clinical utility. In this study we aimed to develop a short form (ALSSQOL-SF) suitable for limited clinic time and patient stamina.

METHODS: The ALSSQOL-SF was created using Item Response Theory and confirmatory factor analysis on 389 patients. A cross-validation sample of 162 patients assessed convergent, divergent, and construct validity of the ALSSQOL-SF compared with psychosocial and physical functioning measures.

RESULTS: The ALSSQOL-SF consisted of 20 items. Compared with the ALSSQOL-R, optimal precision was retained, and completion time was reduced from 15-25 minutes to 2-4 minutes. Psychometric properties for the ALSSQOL-SF and its subscales were strong.

DISCUSSION: The ALSSQOL-SF is a disease-specific global QOL instrument that has a short administration time suitable for clinical use, and can provide clinically useful, valid information about persons with ALS. Muscle Nerve 58: 646-654, 2018.

Original languageAmerican English
JournalMuscle and Nerve
Volume58
StatePublished - Nov 1 2018

Keywords

  • 80 and over
  • Adult
  • Aged
  • Amyotrophic Lateral Sclerosis
  • Cross-Sectional Studies
  • Female
  • Humans
  • Male
  • Middle Aged
  • Psychometrics
  • Quality of Life
  • Reproducibility of Results
  • Retrospective Studies
  • Surveys and Questionnaires

Disciplines

  • Medicine and Health Sciences
  • Rheumatology

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