Table 3. The impacts of different mPHR functions on the probability of users abandoning the app.

	Likelihood of abandonment
	Coefficient	P-value
Average usage of self-monitoring function of patient i per week (AVG_SM)	-0.18	0.003
Average usage of chart function of patient i per week (AVG_CHART)	0.02	0.374
Average usage of medication function of patient i per week (AVG_MED)	0.10	0.044
Average usage of outpatient support service of patient i per week (AVG_OSS)	0.13	0.000
Standard deviation of usage of self-monitoring function of patient i per week (STD_SM)	0.10	0.001
Standard deviation of usage of chart function of patient i per week (STD_CHART)	-0.04	0.052
Standard deviation of usage of medication function of patient i per week (STD_MED)	-0.09	0.065
Standard deviation of usage of outpatient support service of patient i per week (STD_OSS)	-0.05	0.008

Note: The coefficients of the control variables were not reported for brevity. The control variables included patient’s age, gender, number of outpatient visits, number of hospital admissions, number of emergency room visits, disease type, and individual heterogeneity in app usage such as the average and standard deviation of the number of days used per week (See S4 Table for details).

The unused period was one month for this result. See S3 Table for the results of all three periods (one, three, five-month)