فهرست نشریات علمی دسترسی آزاد ایران

Measurement error is an inherent and unavoidable component of nonsampling error in surveys‎, ‎and its estimation is essential for assessing the quality of survey results‎. ‎This paper investigates two agreement criteria‎, ‎Cohen’s Kappa and Gwet’s AC1‎, ‎for quantifying measurement error in binary survey data‎. ‎A theoretical comparison is first presented to highlight the conceptual differences between the two coefficients‎. ‎This is followed by a simulation study in which true binary values are generated under varying prevalence levels‎, ‎and observed responses are obtained through controlled misclassification mechanisms characterized by specified levels of observed agreement‎. ‎The performance and empirical variances of both agreement measures are evaluated and the results demonstrate that Gwet’s AC1 provides more stable agreement estimates and variance behavior than Cohen’s Kappa‎, ‎particularly under conditions of extreme prevalence.