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. 2013 Mar 27;1(1):e1. doi: 10.2196/mhealth.2432

Table 3.

The numbers of days on which each function was used against a period in which each function was available.


Blood glucose sensor system Nutrition habit recording system Physical activity sensor system
Participant Dra Dab
Dr Da
Dr Da
P01d 102 395 (26%) 101 395 (26%) 71 152 (47%)
P02d 158 393 (40%) 51 393 (13%) 56 239 (23%)
P03d 390 395 (99%) 365 395 (92%) 210 219 (96%)
P04 16 393 (4%) 11 393 (3%) 33 138 (24%)
P05d 294 393 (75%) 277 393 (70%) 143 265 (54%)
P06 334 393 (85%) 323 393 (82%) 159 244 (65%)
P07d 327 374 (87%) 98 374 (26%) 61 202 (30%)
P08d 58 395 (15%) 357 395 (90%) 161 197 (82%)
P09c, d 348 352 (99%) 8 352 (2%) 129 132 (98%)
P10d, e 278 389 (71%) 88 393 (22%) 116 191 (61%)
P11d 60 380 (16%) 152 380 (40%) 86 210 (41%)
P12 209 393 (53%) 240 393 (61%) 86 147 (59%)

aDr is the number of days on which records were made.

bDa is the number of days when a function was available.

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

dThe step counters had problems, so that there were periods when participants could not use their step counter.

eP10’s blood glucose sensor system did not function for 4 days.