Table 3.

Facets of engagement measured in microrandomized trials of mobile health (mHealth) interventions.

Source		Physical	Affective	Cognitive
Evaluate effect of intervention components
	Aguilera et al [23], 2021	✓
	Battalio et al [24], 2021	✓
	Goldstein et al [26], 2021	✓
	Klasnja et al [27], 2021	✓
	Klasnja et al [28], 2019	✓
	Kramer et al [29], 2020	✓
	Latham [30], 2021a	✓	✓
	Jeganathan et al [31], 2022	✓
	Spruijt-Metz et al [33], 2022	✓
	Wang et al [34], 2022	✓
	Dowling et al [35], 2022	✓
	Rodda et al [36], 2022	✓
Evaluate strategies to improve engagement
	Bell et al [22], 2020	✓
	Bidargaddi et al [37], 2018	✓
	Nahum-Shani et al [38], 2021	✓
	Nordby et al [39], 2022	✓
Evaluate feasibility and acceptability of intervention
	Militello et al [40], 2022	✓
	Yang et al [41], 2022	✓
Describing engagement
	Hoel et al [42], 2022	✓		✓
	Valle et al [43], 2020	✓

^aThis study was also designed to evaluate the feasibility and acceptability of its mHealth intervention.