TY - JOUR
T1 - Reliability of blood glucose monitoring by patients with diabetes mellitus
AU - Mazze, Roger S.
AU - Shamoon, Harry
AU - Pasmantier, Rosemarie
AU - Lucido, David
AU - Murphy, Joann
AU - Hartmann, Klaus
AU - Kuykendall, Victor
AU - Lopatin, William
N1 - Funding Information:
From the Diabetes Research and Training Center, Albert Einstein College of Medicine and Montefiore Hospital and Medical Center, Bronx, New York, and the Ames Division, Miles Laboratories, Elk-hart, Indiana. This work was supported in part by National Institutes of Health Grant 2P-60-AM-20541-06 and a research and development contract from the Ames Division of Miles Laboratories. Requests for reprints should be addressed to Dr. Roger S. Maze, Diabetes Research and Training Center, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461. Manuscript accepted February 3, 1964.
PY - 1984/8
Y1 - 1984/8
N2 - Nineteen patients with insulin-dependent diabetes mellitus were evaluated for overall reliability of self-generated data from capillary blood glucose monitoring. For a period of 12 to 14 days, standard reflectance meters used by these subjects were replaced by meters internally modified with memory chips capable of storing all glucose readings by date and time. The subjects were not aware of this modification and were instructed to continue to test capillary blood glucose as they had been and to continue their practice of recording the meter readings in a logbook. To assess reliability of patientgenerated data as recorded in the logbook, the addition, deletion, and alteration of test results were determined. A significantly lower (p < 0.0001) mean blood glucose level was reported in the logbooks than recorded in the memory reflectance meters. Differences in logbooks and memory reflectance meters ranged from 0 to 109 mg/dl. Three fourths of the subjects had reported lower than actual mean blood glucose values. Under-reporting, or omission of memory reflectance meter readings, averaged 10 percent, whereas overreporting or addition of phantom values averaged 40 percent. An average of 26 percent of the logbook entries were not identical to memory reflectance meter values determined at the corresponding time. Two thirds of the subjects had reported values in such a manner as to obscure hyper- and hypoglycemia, leading to misleading clinical impressions about the fluctuation in metabolic control. Previous glycemic control, patterns of logbook recording, or visits to the clinic were not found to be predictive of the reliability of patient self-monitoring regimens.
AB - Nineteen patients with insulin-dependent diabetes mellitus were evaluated for overall reliability of self-generated data from capillary blood glucose monitoring. For a period of 12 to 14 days, standard reflectance meters used by these subjects were replaced by meters internally modified with memory chips capable of storing all glucose readings by date and time. The subjects were not aware of this modification and were instructed to continue to test capillary blood glucose as they had been and to continue their practice of recording the meter readings in a logbook. To assess reliability of patientgenerated data as recorded in the logbook, the addition, deletion, and alteration of test results were determined. A significantly lower (p < 0.0001) mean blood glucose level was reported in the logbooks than recorded in the memory reflectance meters. Differences in logbooks and memory reflectance meters ranged from 0 to 109 mg/dl. Three fourths of the subjects had reported lower than actual mean blood glucose values. Under-reporting, or omission of memory reflectance meter readings, averaged 10 percent, whereas overreporting or addition of phantom values averaged 40 percent. An average of 26 percent of the logbook entries were not identical to memory reflectance meter values determined at the corresponding time. Two thirds of the subjects had reported values in such a manner as to obscure hyper- and hypoglycemia, leading to misleading clinical impressions about the fluctuation in metabolic control. Previous glycemic control, patterns of logbook recording, or visits to the clinic were not found to be predictive of the reliability of patient self-monitoring regimens.
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U2 - 10.1016/0002-9343(84)90693-4
DO - 10.1016/0002-9343(84)90693-4
M3 - Article
C2 - 6380287
AN - SCOPUS:0021152785
SN - 0002-9343
VL - 77
SP - 211
EP - 217
JO - The American Journal of Medicine
JF - The American Journal of Medicine
IS - 2
ER -