Table 2.

Descriptions of and statistics of variables used in algorithms A and B (Figure 2).

Variables		Description	No.	No missing	Minimum	Maximum
CCMa database
	Eligibility date	The date that the patient was eligible for the CCM intervention.	15,576 (patient instances)	0	March 3, 2008	May 17, 2018
	Start date	The date that the care coordinator offered the CCM to the patient.	15,576 (patient instances)	3649 (23.42); patient instances having missing start-date	March 6, 2008	May 14, 2018
	End date	The end date of the CCM intervention.	15,576 (patient instances)	0	March 3, 2008	May 15, 2018
Computed variables using the CCM database
	Activation-time (SE_Time)	Difference between the start date and the end date.	11,927 (76.57); patient instances having start-date	0	0 (days)	1263 (days)
	Eligibility-time	Difference between the eligibility date and the end date, if the start date is missing.	3649 (23.42) patient instances having eligibility date but without start date	0	0 (days)	900 (days)
Contact database
	Contact date (date of contact)	The date of contact between the patient and the care coordinator.	121,435 instances of contact	206 (0.17)	March 7, 2008	September 28, 2018
	Time spent	The time spent for each contact.	121,435 instances of contact	0	0	990 min
Computed contact variables for patient instances with activation-time >0
	Total number of contacts for each patient instance (algorithm A)	Total number of contacts between the clinician and the patient with activation-time >0.	6824; total number of enrolled patient instances having contact information	90 (1.32); total number of patient instances with no contact information	1 (number of contact)	123 (number of contact)
	Total time spent for each patient instance (algorithm A)	The total time that the clinician spent for communicating with the patients with activation-time >0.	6824; total number of enrolled patient instances having contact information	90 (1.32); total number of enrolled patient instances with no contact information	0 (min)	3375 (min)
Computed contact variables for patient instances with eligibility-time >0
	Total number of contacts for each patient instance (algorithm B)	Total number of contacts between clinicians and patients with eligibility-time >0.	433; total number of patient instances with eligibility time >0	263 (60.73); total number of patient instances with eligibility time >0 and having no contact information	1 (number of contacts)	27 (number of contacts)
	Total time spent for each patient instance (algorithm B)	The total time that the clinician spent for communicating with patients with eligibility-time >0.	433; total number of patient instances with eligibility time >0	263 (60.73); total number of patient instances with eligibility time >0 and having no contact information	0 (min)	645 (min)
	CE_Time (algorithm B)	Duration between the first contact date (in the contact data set) and the end date (in the CCM data set).	154 (35.56); total number of patient instance s having at least one contact date	0	0	616

^aCCM: care coordination model.