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. 2021 Nov 16;9(11):e30485. doi: 10.2196/30485

Table 2.

Operationalization and distribution of the research variables (N=70).

Variable Value
iMASa system functionalities used, n (%)

Automated appointment confirmation and reminder by email, SMSb text messaging, or telephone 28 (67)

Confirmation, modification, or cancellation of the appointment via the internet by the patient 21 (50)

Invoicing compensatory fees for missed appointments 1 (2)

Optimization of web-based appointment scheduling according to predetermined parameters
(eg, adapted access, patient attendance, and avoidance of gaps in the schedule)
9 (21)
MASc system functionalities used, n (%)

Offer of appointments by automated telephone messages 20 (59)

Automated appointment confirmation and reminder(s) by email, SMS text messaging, and telephone 22 (65)

Confirmation, modification, or cancellation of the appointment via the internet by the patient 21 (62)

Internet-based preconsultation questionnaire completed by the patient (reason for the consultation) 12 (35)

Invoicing compensatory fees for missed appointments 5 (15)

Optimization of web-based appointment scheduling according to predetermined parameters (eg, advanced access, attendance, avoidance of gaps in the schedule, and automated appointment scheduling for patients on the waiting list) 10 (29)

Restriction of the appointment offer for certain patients (registered vs unregistered) 20 (59)
Advanced access scheduling principles applied, n (%)

Balancing supply and demand 34 (49)

Reducing accumulated backlogd 27 (39)

Rethinking the appointment systeme 45 (64)

Developing contingency plans


Schedule planning based on absences 18 (26)


Planning for overflow periods 11 (16)

Incorporating interprofessional practice 32 (46)
Scheduling performancef, mean (SD)

The number of missed appointments (“no-shows”) at my clinic is not a problem 3.4 (1.1)

My clinic is still enrolling a large number of “orphan” patients 3.0 (1.3)

The management of schedules by the administrative staff is very efficient 3.7 (1.0)

Web-based appointment booking by the administrative staff is very efficient 3.3 (1.2)

The satisfaction of the administrative staff in my clinic with regard to scheduling and making appointments is very high 3.3 (1.1)

The satisfaction of the doctors in my clinic with regard to scheduling and making appointments is very high 3.6 (1.0)

Patient satisfaction in my clinic with the way appointment scheduling works is very high 3.3 (1.1)

Registered patients may obtain a consultation at my clinic within a very short time 3.6 (1.2)

Unregistered patients may obtain a consultation at my clinic within a very short time 3.3 (1.3)

aiMAS: interoperable medical appointment scheduling.

bSMS: short message service.

cMAS: medical appointment scheduling.

dUsing patient empowerment (eg, patient confirmation of appointment, missed appointment fee).

eOpening hours over a period of approximately 2 to 4 weeks.

f1=totally disagree, 2=rather disagree, 3=neither disagree nor agree, 4=rather agree, and 5=totally agree.