translate English to French: At the end of the data collection period, 6,903 questionnaires had been returned ? fewer than the 300 per office that were originally expected.
Ã€ la fin de la pÃ©riode de cueillette des donnÃ©es, 6 903 questionnaires avaient Ã©tÃ© retournÃ©s - moins des 300 par bureau attendus Ã l'origine.