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Table 1 Questionnaire instruments

From: Exposure to mobile telecommunication networks assessed using personal dosimetry and well-being in children and adolescents: the German MobilEe-study

Outcome Measuring instrument
Acute symptoms Typical symptoms mentioned in the context of exposure to mobile phone frequencies, answers following the German "Zerssen complaint list" [23]
Chronic symptoms Following the questions of the HBSC-study (Health Behaviour in School-aged Children) [24]
Mental health German version of the Strength and Difficulties Questionnaire (SDQ) [2527]
Potential confounding variables  
Sociodemographic data Questionnaire of the German Health Interview and Examination Survey for Children and Adolescents [28]
Environmental worry Short form of the environmental worry scale [29, 30]
Exposure  
Objective exposure Measurement using personal dosimetry
Subjective exposure Questionnaire of the annual survey of the infas from 2003 [31]