Psychometric Characteristics of the Health Opinion Survey

1977 ◽  
Vol 40 (3_suppl) ◽  
pp. 1160-1162 ◽  
Author(s):  
R. Olukayode Jegede
Keyword(s):  
Medical Students ◽  
Secondary School ◽  
Internal Consistency ◽  
Internal Consistency Reliability ◽  
Coefficient Alpha ◽  
Opinion Survey ◽  
Psychometric Characteristics ◽  
The Mean ◽  
Secondary School Pupils

Gurin's modification of the Health Opinion Survey was completed by 178 medical students, aged 19 to 25 yr., and 241 secondary school pupils, aged 9 to 19 yr. Internal consistency reliability measured by coefficient alpha was .77 and .79, respectively, on the two ratings. The mean of the correlation of each item with the remaining items was .34 for each rating. These findings show that the items on the instrument have much in common, which implies that a single trait may be measured by the Health Opinion Survey.

scholarly journals On Cronbach’s Alpha as the Mean of All Possible k-Split Alphas

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Matthijs J. Warrens
Keyword(s):  
Internal Consistency ◽  
Internal Consistency Reliability ◽  
Reliability Coefficient ◽  
Coefficient Alpha ◽  
Equal Size ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
The Mean ◽  
The Difference

Coefficient alpha is the most commonly used internal consistency reliability coefficient. Alpha is the mean of all possible k-split alphas if the items are divided into k parts of equal size. This result gives proper interpretations of alpha: interpretations that also hold if (some of) its assumptions are not valid. Here we consider the cases where the items cannot be split into parts of equal size. It is shown that if a k-split is made such that the items are divided as evenly as possible, the difference between alpha and the mean of all possible k-split alphas can be made arbitrarily small by increasing the number of items.

Development of an Instrument to Measure Medical Students' Attitudes Toward People with Disabilities

2012 ◽  
Vol 50 (3) ◽  
pp. 251-260 ◽  
Author(s):  
Andrew B. Symons ◽  
Reva Fish ◽  
Denise McGuigan ◽  
Jeffery Fox ◽  
Elie A. Akl
Keyword(s):  
Factor Analysis ◽  
Medical Students ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Clinical Setting ◽  
People With Disabilities ◽  
Internal Consistency Reliability ◽  
Alpha Coefficient ◽  
Good Internal Consistency ◽  
Students Attitudes

Abstract As curricula to improve medical students' attitudes toward people with disabilities are developed, instruments are needed to guide the process and evaluate effectiveness. The authors developed an instrument to measure medical students' attitudes toward people with disabilities. A pilot instrument with 30 items in four sections was administered to 342 medical students. Internal consistency reliability and factor analysis were conducted. The Cronbach's alpha coefficient was 0.857, indicating very good internal consistency. Five components were identified: comfort interacting with people with disabilities, working with people with disabilities in a clinical setting, negative impressions of self-concepts of people with disabilities, positive impressions of self-concepts of people with disabilities, and conditional comfort with people with disabilities. The instrument appears to have good psychometric properties and requires further validation.

Effects of Number and Type of Response Choices on Internal Consistency Reliability

1994 ◽  
Vol 79 (2) ◽  
pp. 928-930 ◽  
Author(s):  
Gerald Halpin ◽  
Glennelle Halpin ◽  
Scott Arbet
Keyword(s):  
Item Response ◽  
Internal Consistency ◽  
Internal Consistency Reliability ◽  
Coefficient Alpha ◽  
Reliability Estimate ◽  
Response Choices ◽  
True False

The purpose of this study was to examine the effects on Cronbach coefficient alpha, an estimate of internal consistency reliability, of altering the number and type of item-response choices on measures administered to two independent samples ( ns, 492 and 730). An increase in the number and type of response choices (from true/false format to four-choice Likert-type format) significantly increased the internal consistency reliability estimate.

scholarly journals An investigation of the measurement properties of the de Morton Mobility Index for measuring mobility capacity in hospital patients with Parkinson’s disease

2020 ◽  
pp. 026921552096647
Author(s):  
Tobias Braun ◽  
Detlef Marks ◽  
Christian Thiel ◽  
Alexandra Menig ◽  
Christian Grüneberg
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Construct Validity ◽  
Internal Consistency ◽  
Internal Consistency Reliability ◽  
Measurement Properties ◽  
Rater Reliability ◽  
Mobility Index ◽  
Hospital Patients ◽  
The Mean

Objective: To examine the measurement properties of the de Morton Mobility Index (DEMMI), a performance-based clinical outcome assessment of mobility capacity, in hospital patients with Parkinson’s disease. Design: Cross-sectional study. Participants: Hospital patients with Parkinson’s disease. Main outcome measure(s): Structural validity and unidimensionality (Rasch analysis), construct validity, internal consistency reliability, and inter-rater reliability of the de Morton Mobility Index (scale range: 0–100 points) were established. The minimal detectable change, the 95% limits of agreement and possible floor and ceiling effects were calculated to indicate interpretability. Results: We analysed validity ( n = 100; mean age: 70 years; 71% male) and reliability ( n = 47; mean age: 71 years; 68% male) in two samples. The mean Hoehn and Yahr stage was 3.2 and the mean disease duration was 12 years in both samples. Rasch analysis indicated unidimensionality with an overall fit to the model (chi-square = 21.49, P = 0.122). Seventy-three percent of hypotheses on construct validity were confirmed. Internal consistency reliability (Cronbach’s alpha = 0.91) and inter-rater reliability (intraclass correlation coefficient = 0.88; 95% confidence interval: 0.80 to 0.93) were sufficient. The minimal detectable change with 90% confidence was 17.5 points and the limits of agreement were 31%. No floor or ceiling effects were observed. The mean administration time was 6.6 minutes. Conclusion: This study provides evidence of unidimensionality, sufficient internal consistency reliability, inter-rater reliability, construct validity, and feasibility of the de Morton Mobility Index in hospital patients with Parkinson’s disease. Trial registration: German Clinical Trials Register (DRKS00004681). Registered May 6, 2013.

scholarly journals Confirmatory Factor Analysis of the Malay Version of the Smartphone Addiction Scale among Medical Students in Malaysia

2020 ◽  
Vol 17 (11) ◽  
pp. 3820 ◽  
Author(s):  
Siti Rubiaehtul Hassim ◽  
Wan Nor Arifin ◽  
Yee Cheng Kueh ◽  
Nor Azwany Yaacob
Keyword(s):  
Factor Analysis ◽  
Medical Students ◽  
Confirmatory Factor Analysis ◽  
Internal Consistency ◽  
Concurrent Validity ◽  
Five Factor Model ◽  
Internal Consistency Reliability ◽  
Smartphone Addiction ◽  
Correlated Errors ◽  
Confirmatory Factor

Background: At present, the validity and reliability evidence of the Malay version of the Smartphone Addiction Scale (SAS-M) is only available by exploratory factor analysis (EFA). The aim of this study is to validate and determine the psychometric properties of the SAS-M by confirmatory factor analysis (CFA). Methods: A cross-sectional study was conducted among 323 medical students in Universiti Sains Malaysia. The students were given questionnaire forms consisting of socio-demographic information, the SAS-M and the Malay version of the Internet Addiction Test (MVIAT). The CFA was conducted using robust maximum likelihood estimator. The internal consistency reliability was determined by Raykov’s rho coefficient. The concurrent validity was assessed by the Pearson’s correlations between the factor scores of the SAS-M and the MVIAT. Results: The analysis showed the five-factor model of the SAS-M has an acceptable model fit after the inclusion of 12 correlated errors (SRMR = 0.067, RMSEA 0.059 (90% CI: 0.054, 0.065), CFI = 0.895, TLI = 0.882). The factor loadings ranged from 0.320 to 0.875. The internal consistency reliability was good (Raykov’s rho = 0.713 to 0.858) and it showed good concurrent validity with the MVIAT. Conclusions: The CFA showed that the SAS-M is a valid and reliable self-administered questionnaire to measure the level of smartphone addiction among medical students.

Statistical Significance and Reliability of Single-Subtest and Cluster Deviation Scores

2008 ◽  
Vol 102 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Leonard S. Feldt ◽  
Richard A. Charter
Keyword(s):  
Internal Consistency ◽  
Statistical Significance ◽  
Internal Consistency Reliability ◽  
Composite Score ◽  
Deviation Score ◽  
Small Set ◽  
The Mean ◽  
The Difference

Suppose one has a battery of K subtests and a composite for the battery is defined as the mean of the K standardized subtest scores. An individual's single-subtest deviation score is the difference between the individual's score on any single subtest and his composite score. A cluster deviation score is the difference between an examinee's average for a small set (cluster) of subtests and his composite. Formulas are given for the test of statistical significance of the individual's subtest or cluster deviation score and the internal consistency reliability of such deviation scores.

Psychometric Characteristics of the WISC-R Performance Scale with Deaf Children

1979 ◽  
Vol 44 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Alfred Hirshoren ◽  
Oliver L. Hurley ◽  
Kenneth Kavale
Keyword(s):  
Predictive Validity ◽  
Internal Consistency ◽  
Concurrent Validity ◽  
Internal Consistency Reliability ◽  
Achievement Test ◽  
Deaf Children ◽  
Test Results ◽  
Psychometric Characteristics ◽  
Standardization Sample ◽  
Performance Scale

The WISC-R Performance Scale was administered to 59 prelingually deaf children; The internal consistency reliability of four of the subtests and the Performance IQ were assessed and found to be similar to the reliability reported by Wechsler (1974) with the standardization sample. Two aspects of criterion-related validity were computed. Concurrent validity as demonstrated by the correlation with the Hiskey-Nebraska Test of Learning Aptitude was found to be adequate. Predictive validity as defined by the correlation with achievement test results was also computed. Statistically significant correlations were found for six of the eight achievement areas. Implications for use are discussed.

Sign in / Sign up

Export Citation Format

Share Document