Table 2.

Engagement outcome measures categorized by phases of program engagement or as qualitative measures.

Component of engagement and measure category		Definition
Initial		Parents’ intent or actual enrollment in a program
	Recruitment rates	Rates of parents recruited per recruitment site per month
	Enrollment rates	Rates of parents enrolling in the program
	Expressions of interest	Rates of parents expressing interest in enrolling in the program
Ongoing		Parents’ behavioral engagement with the program or session or module as a whole
	Ongoing frequency	Measures that provide information on how often a user visits the program
	Attendance a	Visits indicated by attendance to a session
	Log-ins	Visits indicated by log-ins to a module
	Ongoing intensity	Measures that provide information on the depth of users’ engagement within the program
	Session or module interaction	Measures that provide information on users’ interaction with interactive features within sessions or modules.
	Ongoing completion rates	Measures that indicate when a user has completed the program or a session or module
	Program	Measures that indicate when a user has completed the entire program
	Session or module	Measures that indicate when a user has completed a session or a module in the program
	Ongoing time or duration	Measures of the duration of engagement during a visit to the program or the session or module
	Program	Measures of duration of engagement during the entire program
	Session or module	Measures of duration of engagement during a session or a module
	Retention, attrition, or dropout rates	Measures indicating users’ status of engagement with the treatment, program or study
	Treatment or program	Measures indicating users’ status of engagement with the treatment or program itself
	Study	Measures indicating users’ status of engagement with the study in which the treatment or program is delivered
Quality		Parents’ behavioral engagement with the programs or session or module’s specific components
	Intensity of specific component use	Measures that provide information on the depth of users’ engagement with specific components within the program or session or module
	Completion rates of specific components	Measures that indicate when a user has completed specific components within the program or a session or module
	Time or duration spent in specific components	Measures of the duration of engagement during a visit to a specific component within the program
	Adherence	Measures the extent to which the program is engaged with as intended or agreed by the parent or program developer
Qualitative		Parents’ subjective feedback regarding their experience of engaging with the program
	Satisfaction measures	Captures extent to which parent perceives the program met their needs and expectations
	Feedback measures	Captures a range of parents’ reactions or opinions about the program
	Semistructured interviews	Captures parents’ experiences and feelings in relation to using the program
	Think-aloud	Captures parents’ experiences of using the program in real time
	Focus groups	Captures social and contextual factors in specific population subgroups that influence engagement with the program
	Other	Other measures of subjective feedback

^aMeasure category subtypes are italicized.