Post-deployment usability evaluation of a radiology workstation.

Objectives: To determine the number, nature and severity of usability issues radiologists encounter while using a commercially available radiology workstation in clinical practice, and to assess how well the results of a pre-deployment usability evaluation of this workstation generalize to clinical practice.

Methods: The usability evaluation consisted of semi-structured interviews and observations of twelve users using the workstation during their daily work. Usability issues and positive usability findings were documented.

Pattern mining of user interaction logs for a post-deployment usability evaluation of a radiology PACS client.

Objectives: To perform a post-deployment usability evaluation of a radiology Picture Archiving and Communication System (PACS) client based on pattern mining of user interaction log data, and to assess the usefulness of this approach compared to a field study.

Methods: All user actions performed on the PACS client were logged for four months. A data mining technique called closed sequential pattern mining was used to automatically extract frequently occurring interaction patterns from the log data.

The construct validity of the Short Form-36 Health Survey for patients with nonspecific chronic neck pain.

Self-reported disability related to neck pain can be measured using general health questionnaires. The validity of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) in patients with nonspecific chronic neck pain (CNP) in a tertiary outpatient rehabilitation setting is unknown. This study investigates construct validity of the SF-36 in these patients using 16 a-priori formulated hypotheses.

Improving the radiologist-CAD interaction: designing for appropriate trust.

Computer-aided diagnosis (CAD) has great potential to improve radiologists' diagnostic performance. However, the reported performance of the radiologist-CAD team is lower than what might be expected based on the performance of the radiologist and the CAD system in isolation. This indicates that the interaction between radiologists and the CAD system is not optimal.

Physical dysfunction and nonorganic signs in patients with chronic neck pain: exploratory study into interobserver reliability and construct validity.

Study Design: Repeated-measurement design.

Objectives: To explore interobserver reliability of the modified physical dysfunction severity (mPDS) as a measure for impairment of the cervical spine and the modified cervical nonorganic signs (mcNOS) as a measure for behavioral signs, and to explore construct validity of the mPDS and mcNOS.

Background: The PDS has been used for evaluation of treatment efficacy in controlled trials in primary care.

Merits of usability testing for PACS selection.

Objectives: To compare the usability of different Picture Archiving and Communication System (PACS) workstations, determine whether a usability test has added value with respect to the traditional way of comparing PACSs based on functional requirements, and to evaluate the appropriateness of a task-based methodology for a PACS usability test.

Methods: A task-based usability test of four PACS workstations was performed. Radiologists' subjective responses to the PACSs and their performance on the tasks were measured.

Detecting relevant changes and responsiveness of Neck Pain and Disability Scale and Neck Disability Index.

Purpose: To investigate relevant change on the Neck Pain and Disability Scale (NPAD) and Neck Disability Index (NDI) and which questionnaire is the most responsive in patients with non-specific chronic neck pain (CNP).

Methods: Seventy-six patients with non-specific CNP in an outpatient tertiary rehabilitation setting were dichotomized into "improved" and "stable" based on global perceived effect (GPE) scores. To investigate relevant change minimal detectable change (MDC) and minimal important change (MIC) with the receiver operator characteristic (ROC) cut-off point were assessed.

Neck Pain and Disability Scale and Neck Disability Index: validity of Dutch language versions.

Purpose: To investigate the validity of the Neck Pain and Disability Scale Dutch Language Version (NPAD-DLV) and the Neck Disability Index (NDI)-DLV.

Methods: NPAD-DLV, NDI-DLV, Short-Form-36 Health Survey (SF-36)-DLV, visual analog scale (VAS)(pain) and VAS(disability) were administered to 112 patients with non-specific chronic neck pain in an outpatient tertiary rehabilitation setting. Twenty seven hypotheses were formulated regarding validity.

Neck Pain and Disability Scale and the Neck Disability Index: reproducibility of the Dutch Language Versions.

The first aim of this study was to translate the Neck Pain and Disability Scale (NPAD) from English into Dutch producing the NPAD-Dutch Language Version (DLV). The second aim was to analyze test-retest reliability and agreement of the NPAD-DLV and the Neck Disability Index (NDI)-DLV. The NPAD was translated according to established guidelines.

Basis for a functional capacity evaluation methodology for patients with work-related neck disorders.

Background: Neck pain is a common musculoskeletal complaint and a relationship with reduced work-related functional capacity is assumed. A validated instrument to test functional capacity of patients with neck pain is unavailable. The objective of this study was to develop a Functional Capacity Evaluation (FCE), which is content valid for determining functional capacity in patients with work related neck disorders (WRND).

Responsiveness of the Roland-Morris Disability Questionnaire: consequences of using different external criteria.

Objective: To determine the consequences of using different external criteria on responsiveness of the Roland-Morris Disability Questionnaire (RMDQ) in patients with chronic low back pain.

Design: Questionnaire measures before and after rehabilitation treatment.

Setting: Rehabilitation centre.

Relationship between kinesiophobia and performance in a functional capacity evaluation.

Fear of movement and (re)injury (kinesiophobia) has been postulated to play an important role in the performance in a Functional Capacity Evaluation (FCE). This study was performed to analyze the relationship between kinesiophobia and performance in an FCE. Kinesiophobia and FCE performance of 54 male and 10 female patients (mean age 38.

Assessment and treatment of chronic work-related pain disorders in an outpatient university rehabilitation setting in The Netherlands.

Points of view of the assessment and treatment of chronic work-related disorders in a Dutch university rehabilitation setting are described. After a general introduction in which the basic philosophy is outlined, medical issues as well as issues regarding two treatment programs and the evaluation of functional capacity are described. The article ends with a brief description of current and future research programs.

Concurrent validity of questionnaire and performance-based disability measurements in patients with chronic nonspecific low back pain.

This study aimed to investigate the concurrent validity of two approaches to disability measurement in patients with chronic nonspecific low back pain (CLBP). It was hypothesized that if both are measuring the same construct, the instruments would lead to similar disability results and would correlate strongly (r > 0.75).