Several statistical methods can be used to assess the reliability of epidemiological data:
Cronbach’s Alpha: This statistic measures internal consistency. A higher alpha (typically above 0.7) indicates better reliability. Intraclass Correlation Coefficient (ICC): This statistic is used for assessing inter-rater reliability when measurements are made on a continuous scale. Kappa Statistic: This measure is used for categorical data to assess the agreement between raters. A higher kappa value indicates better reliability.
