Key term: bias

Original article [online first; 29 November 2017]   pdf
Is self-reported time spent sedentary and in physical activity differentially biased by age, gender, body mass index, and low-back pain?
Gupta N, Heiden M, Mathiassen SE, Holtermann A
 
Original article 1982;8(1):24-28   pdf
A validation of questionnaire information on occupational exposure and smoking.
Pershagen G, Axelson O
 
Original article 1995;21(1):15-23   pdf
Reducing random measurement error in assessing postural load on the back in epidemiologic surveys
Burdorf A