STUDY OBJECTIVES The single-breath diffusing capacity of the lung (DLCO) is a commonly performed pulmonary function test. The current American Thoracic Society (ATS) recommendations for reproducibility of DLCO measurements suggest that two measurements for the DLCO agree within 10% or 3 mL/min/mm Hg of the average value. The European Respiratory Society (ERS) recommends that two measurements sh...

Permeation-tube moisture generators are used in industry as calibrated sources of water vapor and carrier gas mixtures. Measurements were made using three permeation-tube moisture generators of the type used in the semiconductor industry. This paper describes repeatability and reproducibility standard deviations in measurement of moisture concentration from such generators. Repeatability refers...

BACKGROUND Bone mineral density (BMD) measurements are frequently performed repeatedly for each patient. Subsequent BMD measurements allow reproducibility to be assessed. OBJECTIVE To examine the reproducibility of BMD by dual energy x ray absorptiometry (DXA) and to investigate the practical value of different measures of reproducibility in a group of postmenopausal women. METHODS Ninety f...

introduction: tinnitus can have a significant effect on an individual’s quality of life, and is very difficult quantify. one of the most popular questionnaires used in this area is the tinnitus handicap inventory (thi). the aim of this study was to determine the reliability and validity of a persian translation of the tinnitus handicap inventory (thi-p).   materials and methods: this prospectiv...

we examined the psychometric properties of the arabic version of the obsessive compulsive beliefs questionnaire-44 (obq-44) in a sample of kuwait university students. this questionnaire was developed by the obsessive compulsive cognitions working group in order to assess belief domains believed to be crucial in the development of obsessive compulsive symptoms.the arabic version of the obq-44 wa...

background: wolf motor function test (wmft) is used in the assessment of upper extremity motor function in stroke patients. this scale contains 15 items and assesses joint-segment movements and functional tasks. objectives: translation and assessment of internal consistency and reliability of the persian version of wmft in iranian stroke patients. materials and methods: after translation (based...