A validated model for the 22‐item Sino‐Nasal Outcome Test subdomain structure in chronic rhinosinusitis
Allen L. FengNicholas C. WeselyLloyd P. HoehleKatie M. PhillipsAlisa YamasakiAdam P. CampbellLuciano Lobato GregórioThomas E. KilleenDavid S. CaradonnaJosh MeierStacey T. GrayAhmad R. Sedaghat
106
Citation
42
Reference
10
Related Paper
Citation Trend
Abstract:
Background Previous studies have identified subdomains of the 22‐item Sino‐Nasal Outcome Test (SNOT‐22), reflecting distinct and largely independent categories of chronic rhinosinusitis (CRS) symptoms. However, no study has validated the subdomain structure of the SNOT‐22. This study aims to validate the existence of underlying symptom subdomains of the SNOT‐22 using confirmatory factor analysis (CFA) and to develop a subdomain model that practitioners and researchers can use to describe CRS symptomatology. Methods A total of 800 patients with CRS were included into this cross‐sectional study (400 CRS patients from Boston, MA, and 400 CRS patients from Reno, NV). Their SNOT‐22 responses were analyzed using exploratory factor analysis (EFA) to determine the number of symptom subdomains. A CFA was performed to develop a validated measurement model for the underlying SNOT‐22 subdomains along with various tests of validity and goodness of fit. Results EFA demonstrated 4 distinct factors reflecting: sleep, nasal, otologic/facial pain, and emotional symptoms (Cronbach's alpha, >0.7; Bartlett's test of sphericity, p < 0.001; Kaiser‐Meyer‐Olkin >0.90), independent of geographic locale. The corresponding CFA measurement model demonstrated excellent measures of fit (root mean square error of approximation, <0.06; standardized root mean square residual, <0.08; comparative fit index, >0.95; Tucker‐Lewis index, >0.95) and measures of construct validity (heterotrait‐monotrait [HTMT] ratio, <0.85; composite reliability, >0.7), again independent of geographic locale. Conclusion The use of the 4‐subdomain structure for SNOT‐22 (reflecting sleep, nasal, otologic/facial pain, and emotional symptoms of CRS) was validated as the most appropriate to calculate SNOT‐22 subdomain scores for patients from different geographic regions using CFA.Keywords:
Chronic Rhinosinusitis
Exploratory factor analysis
This survey study was carried out to review the generic skills (GS) model for engineering students. A total of 527 respondents were involved in this research. The variables presented in this research were the skill of gathering and analyzing information, communication skill, team working skill, problem solving skill, life long learning skill, technology utilization skill, critis and creative thinking skill, entrepreunuership, leadership and personal qualities. Data were analyzed descriptively for reliability (Cronbach Alpha values) and confirmatory factor analysis (CFA) was used to obtain 10 factor solutions using AMOS software. The results showed that the Cronbach Alpha was on the classification of high and very high which was higher than 0.70. Result of second order CFA confirmed 10 factors solution with data collected was fit with model. The study also proposed a model of generic skills for engineering students. KEYWORDS: generic skills, engineering students, confirmatory factor analysis
Factor (programming language)
Cite
Citations (1)
Cite
Citations (0)
Cronbach's alpha is a potentially useful statistic for scale development that can be misleading when used improperly. As a result, it is important for human dimensions researchers to use the statistic cautiously. The purpose of this study is to explore the importance of segmentation and confirmatory factor analysis in scale development. Data were obtained from mail surveys on wolves and wolf management given to Grand Teton National Park visitors and Greater Yellowstone Area residents. Cronbach's alpha was calculated on the survey questions regarding emotions about wolves for park visitors and local residents merged and each segment individually. Confirmatory factor analysis was also conducted on each segment. Beyond demonstrating the importance of confirmatroy factor analysis in scale development, results suggest that segmentation is an important consideration. Indices commonly used by researchers to measure social science concepts such as emotions about wolves cannot be assumed to fit all segments.
Statistic
Cite
Citations (68)
Objectives: To investigate the validity and reliability of Modified Picture Vocabulary Test IV (PPVTIV) in 48-59 months old child. Methods 228 items in 19 sets of PPVT IV were translated in Indonesian language and revised according to Indonesian culture. One hundred and five 48-59 months old children were tested. The results wereanalyzed for its construct validity and reliability. The construct validity was valued by the correlation coefficient between the set score and the total score and the correlation coefficient between the itemscore and the set score. The reliability was valued by intra-class correlation coefficient, standard error of measurement (SEM) and Cronbach alpha.Results: The construct validity of Modified PPVT IV was good (r>0.256; α=0.01 n=100) and the reliability was high (internal consistency with Cronbach alpha= 0.938, inter-rater reliability= 0.957-0,985 and standard error of measurement (SEM) = 6.4).Conclusions: Modified PPVT IV was a valid instrument with satisfactory reliability. To increase the construct validity, there were 36 items that should be substituted.Key Words: Modified PPVT IV, construct validity, internal consistency reliability, inter-rater reliability, standard error of measurement Received in
Validity
Concurrent validity
Cite
Citations (2)
Objective To explore the role of confirmatory factor analysis in checking the new questionnaire's construct validity.Methods Using QOL-HBV as a tool,the questionnaire's construct validity was estimated by exploratory factor analysis(principal component analysis,varimax rotation) and confirmatory factor analysis.Results Exploratory factor analysis made QOL-HBV including eight factors,every factor had reasonable explanation(KMO value was 0.883,explanatory total variance was 69.15%),then using factor analysis got two factors;employing confirmatory factor analysis on the eight factors by AMOS got the two-orders and seven factors model.χ2/DF was 1.310,GFI0.90,AGFI0.90.Conclusion The factors using exploratory factor analysis are still having some potential connections and can not be explained.Confirmatory factor analysis can redeem the defect,so it is the best way to combine confirmatory factor analysis with exploratory factor analysis to estimate the questionnaire's construct validity.
Varimax rotation
Exploratory factor analysis
Cite
Citations (0)
Food souvenirs as the tangible reminder that encounters the travelling experience are considered as an essential element in the tourism industry. However, the studies exploring the dimension of food souvenirs, are limited, and most of them applying single factor analysis, either exploratory or confirmatory. In response to the identified gap, this research scrutinizes the aspects of food souvenirs by utilizing a mixed method of exploratory-confirmatory factor analysis. The data was collected from 252 domestic tourists in Bandung, Indonesia. The exploratory factor analysis test identifies four dimensions of food souvenirs: tangible, brand and packaging, value, food quality. Although confirming the food souvenir dimension, the confirmatory factor analysis notes that the elements of the dimensions are different from that identified in exploratory factor analysis. Besides offering a theoretical understanding on the food souvenirs dimension, this study extends our understanding of a methodological issue that the exploratory-confirmatory factor analysis offers a better explanation on the food souvenir dimension compared to that of single factor analysis.
Exploratory factor analysis
Exploratory analysis
Exploratory research
Factor Analysis
Cite
Citations (4)
The psychometric properties of a questionnaire to measure and compare student satisfaction with instruction in Face-to-Face Education (FFE) and Emergency Remote Education (ERE) scenarios were analyzed. The sample consisted of 393 students from a Mexican public university. An Exploratory Factor Analysis (EFA) was performed for the application of the questionnaire in the FFE scenario revealed a four-factor/dimensional solution with an explained variance of 66.45%; the Cronbach's alpha internal consistency coefficient for the application in the EP scenario was .904. The EFA results for the questionnaire application in the ERE scenario revealed a four-factor/dimensional solution that explained 76.30% of the variance; Cronbach's alpha internal consistency coefficient for this scenario was .951. The results revealed solutions congruent with the theory and structure of the questionnaire.
Exploratory factor analysis
Face validity
Cite
Citations (0)
Despite the importance of perceived barriers against self-care in diabetic patients, the role of this factor is rarely addressed in the improvement of self-care behaviors of Iranian patients. The lack of appropriate instruments that fit demographic properties of Iranian society is one reason. The aim of this study was to develop and validate the scale of perceived barriers to self-care in patients with type 2 diabetes mellitus.This cross-sectional study conducted on 400 patients with type 2 diabetes who were covered by the health centers in Isfahan (Iran) in 2015. A 22-item, researcher-made instrument was designed; the face and content validities of the instrument were examined through obtaining the opinions of an expert panel before administering the instrument in the study. Also, the exploratory factor analysis was used to investigate the instrument's validity. Cronbach's alpha was employed to measure its internal consistency (reliability). To examine the validity of the final scale, the mean scores of perceived barriers in patients with appropriate and inappropriate self-care behaviors were compared.The research sample was comprised of 240 women (60%) and 160 men (40%). The mean value of the content validity index was 0.84. The results of factor analysis confirmed the validity of the 11 items and 3 factors of the developed scale. The factor loading ranged from 0.46 to 0.78. These three factors together explained 40.28% of the total variance. The overall reliability coefficient of the instrument was 0.79, ranging from 0.82 to 0.93 for three factors.According to the results, the developed scale was a valid and reliable instrument for examining the barriers perceived by the patients. The findings of this research can help health policy makers in planning to facilitate the self-care behaviors as the most vital factor in diabetes control.
Exploratory factor analysis
Content Validity
Face validity
Validity
Item analysis
Cite
Citations (1)
This survey study was carried out to review the measurement items of learning environment model for
engineering students. A total of 535 respondents were involved in this research. The variables presented in this research were the peer interaction, lecturer interaction and education facilities. Data were analyzed
descriptively for reliability (Cronbach Alpha values) and confirmatory factor analysis (CFA) was used to
obtain 3 factor solutions using AMOS software. The results showed that the Cronbach Alpha was on the
classification of high and very high which was higher than 0.70. Result of CFA confirmed 3 factors solution
with data collected was fit with model. The study also proposed a model of learning environment for
engineering students.
Cite
Citations (6)
The study was conducted to produce empirical data on the reliability and validity of the Teaching Framework for Mathematics (TF@Maths) questionnaire. A survey was conducted in one public university and one institution of teacher education in Northern Zone of Malaysia towards 436 students from the Mathematics Education. The reliability and validity of the TF@Maths questionnaire were tested with the Cronbach’s alpha and Exploratory Factor Analysis (EFA) respectively using the Statistical Package for the Social Sciences (SPSS) software version 23. The TF@Maths questionnaire is a 7 point Likert- scale survey consisted of 86 items. The Cronbach’s alpha test conducted shows that the overall score was 0.939 indicating high reliability of the items in the instrument. For validity, EFA was then conducted with the items using principal component analysis extraction and Varimax rotation. There were 62 items retaining with the factor loadings that was above 0.4. The factor analysis shows that the TF@Maths produced six factors, namely: mathematics content knowledge, mathematical pedagogical knowledge, general pedagogical knowledge, classroom management skill, mathematics disposition and quality mathematics teacher. The findings of TF@Maths will bebefit educational practitioners in designing a Teaching Mathematics Framework.
Varimax rotation
Exploratory factor analysis
Content Validity
Validity
Cite
Citations (154)