Intended for healthcare professionals

Rapid response to:


Efficacy of self monitoring of blood glucose in patients with newly diagnosed type 2 diabetes (ESMON study): randomised controlled trial

BMJ 2008; 336 doi: (Published 22 May 2008) Cite this as: BMJ 2008;336:1174

Rapid Response:

Compliance and Contamination

"Of the 96 participants in the self-monitoring group, 63 carried out
more than 80% of the requested blood glucose monitoring (that is, four
fasting and four postprandial readings a week)."

Compliance is possibly a systematic problem in this study.
There is 65.6% compliance to the intervention, even with the laxity in
intervention compliance - "defined" as >80% of the monitoring expected.

Thus, with the compliance laxity, the worst case scenario gives 34.4%
contamination from self-monitoring to no monitoring.

Competing interests:
None declared

Competing interests: No competing interests

16 November 2008
James A Campbell
Medical Student
Auckland City Hospital 1023