Table 1.

Numbers of dentists who registered and participated in the online course of dental radiation technology for dentist continuing education (DCE) offered by the Taiwan Dental Association (TWDA), as well as those who completed the quiz after the course in October 2022 and in March 2023.

	October 2022	March 2023	Overall
Number of dentists who registered the course	161	163	324
Number of dentists who participated in the course	134	119	253
Attendance rate	83.23% (134/161)	73.01% (119/163)	78.09% (253/324)
Number of dentists who completed the questionnaire	132	117	249
Valid response rate	98.51% (132/134)	98.32% (117/119)	98.42% (249/253)