TY - JOUR
T1 - Factorial Validity, Reliability, Measurement Invariance and the Graded Response Model for the COVID-19 Anxiety Scale in a Sample of Ecuadorians
AU - Moreta-Herrera, Rodrigo
AU - Caycho-Rodríguez, Tomás
AU - Salinas, Alexandra
AU - Jiménez-Borja, Micaela
AU - Gavilanes-Gómez, Daniel
AU - Jiménez-Mosquera, Carlos José
N1 - Publisher Copyright:
© The Author(s) 2022.
PY - 2022
Y1 - 2022
N2 - The aims of the research are to evaluate the factorial validity, internal consistency, measurement invariance, discrimination, and difficulty of the Covid-19 Anxiety Scale (CAS) applied to a sample of Ecuadorian adults (N = 451). The study is based on an instrumental design with Classical Test Theory (CTT) and Item Response Theory (IRT) technics. The results confirmed the validity of the CAS single-factor structure, with measurement invariance across gender and high internal consistency. Additionally, all CAS items displayed adequate discrimination indexes and proper ordering of the difficulty thresholds. In a conclusion, the CAS is a valid measurement scale for Ecuadorian adults.
AB - The aims of the research are to evaluate the factorial validity, internal consistency, measurement invariance, discrimination, and difficulty of the Covid-19 Anxiety Scale (CAS) applied to a sample of Ecuadorian adults (N = 451). The study is based on an instrumental design with Classical Test Theory (CTT) and Item Response Theory (IRT) technics. The results confirmed the validity of the CAS single-factor structure, with measurement invariance across gender and high internal consistency. Additionally, all CAS items displayed adequate discrimination indexes and proper ordering of the difficulty thresholds. In a conclusion, the CAS is a valid measurement scale for Ecuadorian adults.
KW - anxiety
KW - Covid-19
KW - difficulty
KW - discrimination
KW - reliability
KW - scale validity
UR - http://www.scopus.com/inward/record.url?scp=85134603121&partnerID=8YFLogxK
U2 - 10.1177/00302228221116515
DO - 10.1177/00302228221116515
M3 - Article
AN - SCOPUS:85134603121
SN - 0030-2228
JO - Omega (United States)
JF - Omega (United States)
ER -