2.2.2. Telephone Reminder
The public health nurse called the participants on weekdays using the phone numbers that the participants had provided as their contact information when they were enrolled in the National Health Insurance program. The information provided to the participants was compiled into a manual. The main contents were “a brief explanation of the results of the health checkups”, “the explanation of the specific health guidance (including information that the specific health guidance was free of charge)”, “the expiration date of the specific health guidance”, and “information on the medical centers/hospitals/clinics where the specific health guidance is provided and the way to make an appointment”. In cases of disconnection, the public health nurse re-called the participant on different weekdays (up to three times). If family members answered the phone, the public health nurse told them to re-call on different days and asked them to encourage the participant to receive specific health guidance.Of 460 individuals assigned to the telephone reminder group, the public health nurse was able to directly reach 274 participants (59.6%) and to leave a message with the family members of 34 participants (7.4%). The public health nurse could not reach the remaining 152 participants, and they did not receive the telephone reminder.