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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Diabet Med. 2012 Aug;29(8):1067–1073. doi: 10.1111/j.1464-5491.2011.03545.x

Table 2.

Numerical interrelationships among number of subjects, experiments, data sets and glucose data segments

Meal study Comments
Subjects 7 One sensor per subject
Experiments 14 Two experiments per subject (one high glycaemic index, one low glycaemic index)
Data sets 14 One sensor data set per experiment
Rising glucose data segments 13 Of the 14 data sets, there were 11 that had one evaluable rising segment, one that had two evaluable rising segments and two that had no evaluable rising segment
Rising segments after combination of duplicate sensors 13 (No change, single sensor per experiments)
Falling glucose data segments 12 Of the 14 data sets, there were six that had one evaluable falling segment, three that had two evaluable falling segments and five that had no evaluable falling segment
Falling segments after combination of duplicate sensors 12 (No change, single sensor per experiments)
Closed-loop study Comments
14 Two sensors per subject
23 Five subjects had one experiment, nine subjects had two experiments
46 Two sensor data sets per experiment
34 Of the 46 data sets, there were nine that had one evaluable rising segment, five that had two evaluable rising segments, five that had three evaluable rising segments and 27 that had no evaluable rising segment
23 In 11 sensor pairs, both sensors met all inclusion criteria and thus were combined (averaged), leaving 23
36 Of the 46 data sets, there were seven that had one evaluable falling segment, four that had two evaluable falling segments, three that had three evaluable falling segments, three that had four evaluable falling segments and 29 that had no evaluable falling segment
24 In 12 sensor pairs, both sensors met all inclusion criteria and thus were combined (averaged), leaving 24
Combined data from both studies
Total rising data segments 36 13 (meal) + 23 (closed loop) = 36
Total falling data segments 36 12 (meal) + 24 (closed loop) = 36