Table 2.

Results from Mann-Kendall trend test on usage rate.

	Blood glucose sensor system		Nutrition habit recording system		Physical activity sensor system
Participant	Tau-value	P value	Tau-value	P value	Tau-value	P value
P01	-0.19	.06	-0.58	<.001	-0.57	<.001
P02	0.22	.03	-0.01	0.91	-0.10	0.46
P03	-0.01	.96	0.16	0.14	0.21	0.16
P04	-0.35	.002	-0.37	<.001	-0.62	<.001
P05	-0.41	<.001	-0.18	0.07	-0.16	0.18
P06	-0.31	.003	-0.39	<.001	-0.43	0.001
P07	-0.11	.33	-0.58	<.001	-0.58	<.001
P08	-0.06	.56	-0.34	.002	0.12	0.47
P09a	-0.05	.70	-0.37	.002	-0.35	0.08
P10	-0.54	<.001	-0.42	<.001	-0.35	0.01
P11	-0.45	<.001	-0.71	<.001	-0.27	0.05
P12	-0.63	<.001	-0.61	<.001	-0.07	0.69

^aAll the recorded data on P09’s smartphone were accidentally deleted at Meeting 2, and only data recorded after Meeting 2 were used for analyses.