definition of reliability and validity in psychology

... number of completed items, the percent of missing data in every item and the frequency distribution of individual items were determined Ordering of levels of health The ordering of item means within ... reduced with use of Version of the SF-36, and that refinement of items in the Social Functioning, Vitality and Mental Health scales could improve reliability and discriminant validity of these scales ... cluster in the same order as hypothesized for the original SF-36 Tests of scaling assumptions Tests of scaling assumptions determine the appropriateness of including an item in a particular scale and...

Ngày tải lên: 18/06/2014, 19:20

... test the interpretation and understanding of items and response ratings Cognitive interview techniques [15] were used to obtain feedback about the interpretation and understanding of items and respons ... the findings of the original PedsQL™ [9] and the UK-English version [24] and as such confirm that the instrument can be used for self-reports and proxy-reports in school health settings and community ... Quality of Life Inventory (PedsQL) [9] is considered one of the most promising HRQOL instruments for children and adolescents, integrating generic core scales and disease-specific modules into one...

Ngày tải lên: 20/06/2014, 15:20

... disability and it will be interesting to study these effects in large samples However in this preliminary version study, we chose to investigate the effect of severity of disability by means of two indicators ... an interval of one week by using intra-class correlation coefficient (ICC) Validity Construct validity was evaluated by hypothesizing how the measure should behave and confirming or disconfirming ... Tests-retest reliability measures stability over time, by administering the same test to the same subjects at two points in time In this investigation a time interval of a week was used A period of one...

Ngày tải lên: 18/06/2014, 19:20

... The feasibility of conducting quality of life interviews among TB patients using the MOS in urban Uganda setting was evaluated by examining the percent of missing item responses, interviewer-reported ... increasing the likelihood of adequate case management in TB programs Despite the availability of standard instruments for assessing HRQoL [6-8], the feasibility; reliability; and validity of such instruments ... have good internal reliability in a wide variety of settings, an excellent discriminant and convergent validity of the subscales [11,14], and good physical and mental health summary scores in HIV...

Ngày tải lên: 15/03/2014, 03:20

... Convergent and discriminant validity were tested by examining the correlations of items with the PCS and MCS summary scores, and then examining inter-instrument correlations between the SF-8 items and ... were all from the Acholi region of northern Uganda, spoke fluent Luo and English, and had experience of data collection in IDP camps in northern Uganda Six days training was provided for the overall ... Construct validity was also assessed by examining convergent and discriminant validity using the Pearson Correlation Test [42,48,49] Convergent validity seeks to show that the dimensions of an instrument...

Ngày tải lên: 18/06/2014, 19:20

... association of painful DPN with sleep impairment [15] The present study examines perceptions of sleep in an international clinical trial aimed at evaluating the efficacy and safety of the pregabalin, ... neuropathic pain had interfered with their sleep It consists of a single-item with an 11-point numerical rating scale, ranging from (pain does not interfere with sleep) to 10 (pain completely interferes ... weekly mean sleep interference score and the weekly mean pain score at baseline were used to define groups of patients differing in severity Since patients had to have pain at baseline to qualify...

Ngày tải lên: 18/06/2014, 19:20

... abdominal pain is the typical dyspepsia symptom, internal consistency was only moderate in the Abdominal pain domain of the GSRS This generally low internal consistency in the Abdominal pain domain ... confirming the known-groups validity of the instruments GSRS scores increased with increasing frequency and severity of dyspepsia symptoms, while QOLRAD scores decreased with increasing frequency and ... all domains of all language versions of the QOLRAD, thus supporting construct validity Internal consistency was also high in the Indigestion, Diarrhoea and Constipation domains of the GSRS in all...

Ngày tải lên: 18/06/2014, 22:20

... number of health-related quality of life measures have been developed for HIV-infected patients and include assessment of various domains, including functional status and psychological well-being ... declined to participate in the study due to lack of time, transportation issues, or lack of interest in the study Demographic and HIV/AIDS related information Demographic information, including ... results of this initial test provide evidence for acceptable reliability and validity of the Thai versions of the MOS-HIV and SF-12 as measures of HRQOL among HIV+ patients in Northern Thailand Both...

Ngày tải lên: 20/06/2014, 15:20

... version of the 10-item CD-RISC show good psychometric properties and a high level of reliability and validity in young adults The findings also confirmed a single dimension underlying the 10 items of ... The reliability of the Spanish version of the 10-item CD-RISC was similar to that of the original version (Cronbach’s a of the original version = 0.85 and of the Spanish version = 0.85), and ... weights in factor analysis were within the range of 0.48-0.76 on our scale and within the range of 0.44-0.74 in the original The factor structure of the CD-RISC is debated [7,19-21], and no consensus...

Ngày tải lên: 20/06/2014, 15:20

... Measuring health-related quality of life in children with cancer living in mainland China: feasibility, reliability and validity of the Chinese mandarin version of PedsQL 4.0 Generic Core Scales and ... The findings support the feasibility, reliability and validity of the Chinese Mandarin version of PedsQL 4.0 Generic Core Scales and 3.0 Cancer Module in children with cancer living in mainland ... feasibility, reliability, and validity of the Chinese mandarin version of PedsQL 4.0 Generic Core Scales and 3.0 Cancer Module in children with cancer living in mainland China With regard to obtention of...

Ngày tải lên: 20/06/2014, 15:20

... advantage of exploring symptoms in a number of domains including insomnia, agitation and anxiety and may be more sensitive to mild depression An Egyptian study which used the measure found that 71% of ... range of depressive symptoms in a number of domains The 52 items were based on the CRS [19] and assessed symptoms in 16 domains The scale was translated into English and then back translated into ... about all sorts of life problems and circumstances and symptoms of depression which cover a very wide range of problems, from short periods of low mood to a lifetime of mind-numbing inability to...

Ngày tải lên: 11/08/2014, 16:22

... seven point single-item rating scale of the clinician's assessment of the severity of ADHD symptoms [28,29] The WREMB-R-Inv scale is based on the Daily Parent Rating of Evening and Morning Behavior ... Missing values For patients, missing values were between and 0.38% for items 1, 4, and 5, and between 0.24% and 1.61% for items and For parents, missing values for the morning and evening ratings ... Comparison of GIPD scores for the morning and evening items with the WREMB-R morning and evening subscales (convergent validity) As shown in Table 6, the comparison of GIPD scores for the morning and...

Ngày tải lên: 13/08/2014, 18:21

... 36 37 38 39 Hunink M, Glasziou P, Siegel P, Weeks J, Pliskin J, Elstein A, Weinstein M: Decision making in health and medicine: integrating evidence and values In vol Fourth printing, 2005 Cambridge ... different points in time The interand intra-rater agreement is dependent on the uniformity and completeness of a triage system and on how the triage nurse applies the system Good training and instruction ... and the ESI, this question still needs to be answered Research on reliability and validity of triage systems Validity of a triage systems is determined by reliability (inter-rater agreement and...

Ngày tải lên: 13/08/2014, 23:20

... materials and teaching/ learning conditions and suitability of set-up training objectives Testing and Teaching Testing and teaching are closely related because it is impossible to work in either field ... 45-minute periods 33 33 33 39 27 27 Teaching content Reading and grammar Reading and grammar Reading and grammar Reading and grammar Course book Lifelines Elementary Lifelines Elementary Lifeline ... reliability and validity are essential to the interpretation and use of measures of language abilities and are the primary qualities to be considered in developing and using tests For this reason, in...

Ngày tải lên: 07/11/2012, 15:05

... capture of current, clinically relevant feeling and state of coherence for clinical questions in internal oncological patients, because of the very backward-looking, general style of questions and ... outlook on life and drive, perception of health and thermoregulation for oncological patients We followed development of the instrument by testing reliability, and validity of construct and content, ... 19) having cold hands and feet, 20) often and quick freezing The symptoms – were integrated in the parallel development process in the CFS-D [19], the symptoms 9–13 have been integrated in the...

Ngày tải lên: 18/06/2014, 18:20

... regarding information on their age, kinship and degree of schooling Interviews were performed individually by one of the researchers (ACS) in a room specifically reserved for this end The interviewer ... horizontal line and vertical line anchors at either end labeled "complete meaning disagreement" and "complete meaning agreement", denoted as and 100, respectively; the line was marked in units of and ... cancer affects individuals between and 18 years of age and represents from 0.5 to 3.0% of malignant tumors in most populations In Brazil, the estimated incidence of children with tumors in 2006 was...

Ngày tải lên: 18/06/2014, 22:20

... drawing illustrating pendulum test motion sensors Line supine and leg swinging freely with performed with subLine drawing illustrating pendulum test performed with subject supine and leg swinging ... examined the use of magnetic tracking systems during pendulum tests of both lower limbs of patients following stroke Moreover, we failed to find any literature addressing the performance of the ... spasticity in the lower limbs have not shown it to explain reductions in gait speed [11,16,17] While the objectivity, reliability, and validity of the pendulum test and the simplicity and portability of...

Ngày tải lên: 19/06/2014, 08:20

... benefits of integrating generic and disease-specific approaches in measuring HRQOL [10] The development of the Chinese version of the PedsQL™3.0 Asthma Module will not only meet an urgent demand in ... recommend standard of 0.8, indicating a good test-retest reliability of the scale This finding demonstrated that the Chinese version of the PedsQL™3.0 Asthma Module was stable over time In order ... of the Chinese version of the PedsQL™ 3.0 Asthma Module, including the feasibility, internal consistency reliability, test-retest reliability, item-subscale correlations, construct validity and...

Ngày tải lên: 20/06/2014, 15:20

... diseases Measuring quality of life in Iranian children and adolescents with diabetes and assessment of reliability and validity of the Persian version of the PedsQLTM 4.0 Generic Core Scales and the ... Zoethout JA, Koot HM, Bruining J: Effects of insulin pump vs injection treatment on quality of life and impact of disease in children with type diabetes mellitus in a randomized, prospective comparison ... Limbers CA, Burwinkle TM, Bryant WP, Wilson DP: The ePedsQL in type and type diabetes: feasibility, reliability, and validity of the Pediatric Quality of Life Inventory Internet administration Diabetes...

Ngày tải lên: 20/06/2014, 15:20