Reliability can be measured using various statistical methods. Commonly used measures include:
Cronbach's alpha: Used to assess internal consistency. Values range from 0 to 1, with higher values indicating greater reliability. Intraclass correlation coefficient (ICC): Used to assess the reliability of measurements made by multiple raters or instruments. Higher ICC values indicate better reliability. Kappa statistic: Used for categorical data to measure inter-rater agreement. Values range from -1 to 1, with values closer to 1 indicating higher reliability.
