BACKGROUND: Published in 1991, the Neck Disability Index (NDI) was the first instrument
designed to assess self-rated disability in patients with neck pain. This article reviews the …

OBJECTIVE: The purpose of this literature review was to synthesize the existing literature on
various definitions, classifications, selection criteria, and outcome measures used in different …

Study Design. A systematic review was conducted. Objective. To identify, evaluate, and
compare standard scales for assessing neck pain or dysfunction. Summary of Background …

Purpose To critically appraise and compare the measurement properties of the original
versions of neck-specific questionnaires. Methods Bibliographic databases were searched …

PURPOSE: Report the test-retest reliability, construct validity, minimum clinically important
difference (MCID), and minimal detectable change (MDC) for the Neck Disability Index …

STUDY DESIGN: Best evidence synthesis. OBJECTIVE: To critically appraise and
synthesize the literature on assessment of neck pain. SUMMARY OF BACKGROUND DATA …

Study Design. Cultural translation and psychometric testing. Objective. To translate and
validate the Iranian versions of the Neck Disability Index (NDI-IR) and the Neck Pain and …

Study Design. A randomized, prospective clinical study was conducted that included 119
patients with chronic neck pain of greater than 3 months' duration. Objectives. To compare …

The Neck Disability Index (NDI) and Northwick Park Neck Pain Questionnaire (NPQ) were
developed to measure self-perceived disability from neck pain, including that which may …

Study Design. An observational prospective cohort study in general practice. Objectives. To
describe the clinical course and to identify predictors of recovery, changes in pain intensity …