Disability of the Arm, Shoulder and Hand Questionnaire

Abstract

The Disability of the Arm, Shoulder and Hand Questionnaire (DASH) is a widely utilized, self-administered measure designed to assess physical function and symptoms in patients experiencing musculoskeletal conditions affecting the entire upper extremity. The core questionnaire consists of 30 items, which are divided into categories related to specific symptoms (e.g., pain, numbness) and the resulting restriction in daily activities. Responses are recorded on a 5-point Likert scale, where higher scores are indicative of greater disability and severity of complaints.

The DASH scale specifically focuses on the patient’s experience over the preceding week. In addition to the core 30 items, the instrument includes two optional, high-performance modules dedicated to specific functions related to sport, music, and work, allowing clinicians and researchers to tailor the assessment to occupationally or recreationally active individuals.

Keywords

DASH, Disability of the Arm Shoulder and Hand, upper extremity, musculoskeletal disorders, self-report questionnaire, functional status, outcome measure, activity limitations, orthopedics, rehabilitation.

Authors

The original questionnaire was developed by Hudak PL, et al. (1996). The official Dutch translation and adaptation were carried out by Palmen CM, van der Meijden E (2004).

Purpose

The primary purpose of the DASH questionnaire is to serve as a standardized, patient-reported outcome measure (PROM) for quantifying the level of disability and severity of symptoms experienced by individuals with various disorders of the upper extremity. It is intended for use in clinical settings and research to monitor changes in functional status over time, evaluate the effectiveness of interventions, and compare outcomes across different patient populations or treatment modalities.

The scale provides a comprehensive score reflecting the patient’s ability to perform various activities of daily living (ADLs) and participation in social roles, thereby offering a holistic view of the functional impact of conditions ranging from acute injuries (e.g., fractures) to chronic degenerative diseases (e.g., arthritis or carpal tunnel syndrome). The optional modules further refine the assessment of highly specific, complex activities.

Construct

The DASH measures the construct of Upper Extremity Disability and Functional Status. This construct encompasses two primary domains: the physical ability to perform tasks requiring the arm, shoulder, or hand (functional limitations), and the intensity and frequency of associated physical symptoms (pain, weakness, stiffness).

The scale integrates elements from the World Health Organization’s (WHO) International Classification of Functioning, Disability and Health (ICF) model, focusing on body functions/structures (sensorimotor functions and pain) and activity/participation (daily tasks and socio-social life). By targeting the entire kinetic chain of the upper limb, the DASH provides a single, unified score that reflects the overall impact of regional or generalized musculoskeletal disorders on an individual’s life.

Validity

The DASH questionnaire demonstrates strong evidence of validity across diverse patient populations suffering from upper limb disorders. Content validity is ensured by the rigorous item selection process, covering a broad range of daily activities and relevant symptoms associated with the arm, shoulder, and hand.

Construct validity has been consistently supported through numerous studies showing high correlations between the DASH score and other established measures of upper extremity function, such as the QuickDASH (a shortened version) and the SF-36 Physical Functioning subscale. Furthermore, the DASH successfully discriminates between groups with varying levels of disability and demonstrates responsiveness to clinical change, confirming its ability to accurately measure the intended construct.

Reliability

The DASH scale exhibits excellent internal consistency and reliability, making it a highly dependable instrument for longitudinal assessment. Internal consistency, typically measured using Cronbach’s alpha, generally exceeds 0.90 for the core 30 items, indicating that the items are highly interrelated and measure a single underlying construct (disability).

Test-retest reliability is also strong, with high intra-class correlation coefficients (ICCs) usually above 0.90 reported across different studies and language translations. This high level of reliability confirms that the scale provides consistent scores when administered repeatedly to stable patients over short time intervals, ensuring that observed changes are due to genuine clinical improvement or deterioration, rather than measurement error.

Factor Analysis

Initial factor analysis studies of the DASH generally support the conceptualization of the instrument as a largely unidimensional scale, meaning that a single factor (overall upper extremity disability) accounts for the majority of the variance in scores. This supports the use of a single summary score for clinical interpretation.

However, some more detailed analyses have suggested the presence of minor sub-factors, particularly when the optional modules (work/sport/music) are included. Despite these minor variations, the predominant finding confirms that the 30 core items successfully collapse into one meaningful score representing the patient’s overall functional status and activity limitations.

Instrument

Test Type: Psychometric Questionnaire / Patient-Reported Outcome Measure (PROM)

Format: Self-administered questionnaire consisting of 30 core items and two optional 4-item modules (Work/Sport/Music). Scoring utilizes a 5-point Likert scale (1 = No difficulty/symptom, 5 = Unable to do activity/Very severe symptom).

Language Available: Original English, widely translated (including Dutch, as noted in the source material), and formally cross-culturally adapted in numerous languages globally.

Population Group: Patients with musculoskeletal disorders affecting the upper extremity (arm, shoulder, hand).

Age Group: Adults and Elderly.

Population Details: Individuals presenting with conditions of the locomotor system, specifically those impacting the ability to perform activities using the upper limb. This includes trauma, chronic pain, nerve compression syndromes, and degenerative joint disease.

Test Methodology: The patient rates the difficulty or severity associated with each item based on their experience during the preceding week. The raw score is converted to a final DASH score ranging from 0 (no disability) to 100 (most severe disability).

Keywords

Disability assessment, patient-reported outcomes, upper limb function, pain measurement, functional recovery, orthopedics, rehabilitation research, self-scoring, minimum clinically important difference (MCID).

Authors

Author ORCID Identifier: Not specified in the source material. (Refer to primary author publications for specific ORCIDs, e.g., Hudak PL).

Affiliation Email addresses: Not specified in the source material.

Correspondence Address: Not specified in the source material. (Refer to the original publication: Hudak PL, et al. (1996).)

Permissions & Fee and Test Year

Test Year (Original): 1996

Test Year (Dutch Version): 2004

Permissions and Fees: The use of the DASH scale is often managed through licensing bodies depending on the jurisdiction and version used. In many regions, the core DASH and QuickDASH are available for non-commercial research and clinical use without charge, though formal permission may still be required from the authorizing body (often the Institute for Work & Health, Toronto, Canada).

The original Explanation Form (Toelichtingsformulier) for this instrument can be downloaded here: DASH-form.pdf

The original Measurement Instrument (Meetinstrument) can be downloaded here: DASH-meetinstr.pdf

Reference’s

The primary references for the development and validation of the DASH scale are crucial for understanding its psychometric properties and application.

• Hudak PL, Amadio PC, Bombardier C. Development of an upper extremity outcome measure: the DASH (Disabilities of the Arm, Shoulder and Hand). American Academy of Orthopaedic Surgeons (AAOS). 1996.
• Hudak PL, Amadio PC, Bombardier C. Development of the upper extremity outcome measure: the DASH (Disabilities of the Arm, Shoulder and Hand). Am J Ind Med. 1999;36(5):590-596.
• Palmen CM, van der Meijden E. Nederlandse vertaling en validatie van de DASH (Disabilities of the Arm, Shoulder and Hand) vragenlijst. 2004. [Reference for the Dutch version].

Items of the Disability of the Arm, Shoulder and Hand Questionnaire

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The specific text of the 30 core items and the optional modules is not provided in the source content. However, the items typically cover daily activities such as:

• Opening a tight jar.
• Doing heavy household chores without help.
• Carrying a shopping bag or briefcase.
• Washing and drying your hair.
• Recreational activities (e.g., playing a musical instrument or gardening).
• The extent of pain, tingling, and stiffness experienced in the arm, shoulder, or hand.

For the complete list of items in the Dutch version, please refer to the Measurement Instrument PDF provided in the References section: DASH-meetinstr.pdf