Table 1.
Sensor day of wear | Subjects N (%)b | Matched pairs n (%)c | (%) relative difference | (%) absolute relative difference | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Mean | STD | Median | Min, max | Mean | SD | Median | Min, max | |||
Day 1 | 27 (39%) | 818 (38%) | −10.7 | 25.1 | −13.5 | −62.4, 186.4 | 19.3 | 19.3 | 15.6 | 0, 186.4 |
Day 4 | 21 (30%) | 625 (29%) | −4.0 | 21.6 | −6.9 | −46.1, 117.5 | 17.0 | 14.0 | 13.7 | 0, 117.5 |
Day 7 | 21 (30%) | 705 (33%) | −4.9 | 17.1 | −6.4 | −44.4, 103.7 | 13.3 | 11.8 | 10.2 | 0, 103.7 |
Overall | 69 | 2148c | −6.8 | 21.9 | −9.4 | −62.4, 186.4 | 16.7 | 15.8 | 13.2 | 0, 186.4 |
YSI glucose range | Subjects N (%)b | Matched pairs n (%)c | Mean | SD | Median | Min, max | Mean | SD | Median | Min, max |
---|---|---|---|---|---|---|---|---|---|---|
40−80 | 39 | 206 | 5.3 | 37.8 | −1.1 | −42.6, 186.4 | 24.3 | 29.4 | 17.8 | 0.1, 186.4 |
81−120 | 57 | 444 | −4.5 | 24.2 | −6.0 | −62.4, 131.2 | 17.3 | 17.5 | 13.0 | 0, 131.2 |
121−240 | 69 | 1154 | −9.0 | 18.4 | −10.3 | −57.1, 131.3 | 16.1 | 12.7 | 13.0 | 0, 131.2 |
241−300 | 50 | 339 | −11.1 | 13.6 | −12.3 | −42.0, 53.1 | 14.6 | 9.8 | 13.2 | 0, 53.1 |
301−400 | 27 | 175 | −10.6 | 12.6 | −10.5 | −37.2, 31.8 | 13.7 | 9.1 | 11.5 | 0.2, 37.2 |
Overall | 69 | 2318 | −7.3 | 21.6 | −9.7 | −62.4, 186.4 | 16.6 | 15.6 | 13.2 | 0, 186.4 |
YSI in-clinic days occurred on days 1, 4, and 7 of the study. Day 1 sensor elapsed time evaluated: 2−30 hours; day 4 sensor elapsed time evaluated: 62−99 hours; and day 7 elapsed time evaluated: 139−168 hours. Glucose measurements are between 40 and 400 mg/dl.
N, number of subjects contributing data; n, number of matched pairs.
Of the matched pairs, 170 fell outside of day 1, 4, or 7 time windows.