Table 1

The number of individuals in different phases of the recruitment procedure

Language regionGerman (N)French (N)Italian (N)
Indication of interest in participation*571186191
Contact by telephone attempted195186191
Accelerometer and GPAQ questionnaire sent by postal mail†12993174
Valid accelerometer and questionnaire data for physical activity11985150
Valid accelerometer and questionnaire data for sitting time12086160
  • *A telephone contact was not attempted with all interested individuals in the German-speaking part due to the high number of interested individuals.

  • †Individuals who did not get an accelerometer and questionnaire either could not be contacted by telephone, declined participation or participation was not feasible.

  • GPAQ, Global Physical Activity Questionnaire.