Diabetes Mellitus: Likelihood Ratios

Introduction:

See also Insulin Resistance. The gold standard for diabetes is the Oral Glucose Tolerance Test (OGTT), where blood glucose levels are measured at specified time intervals after a specified oral glucose load.

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The likelihood ratios of findings for Diabetes Mellitus are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %.	Post-Test Probability (Predictive Value): %.	Switch to display mode.
Note that calculating probabilities from more than one** finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)

Good Positive Likelihood Ratio
Finding	Result	+LR	-LR
[ + ] Plain X-Ray	+ 0 -	2.3	0.6
population: diabetics Study: JAMA. 2008;299(7):806-813. http://jama.ama-assn.org/cgi/content/full/299/7/806

Good Positive and Negative Likelihood Ratios
Finding	Result	+LR	-LR
[ + ] MRI	+ 0 -	3.9	0.1
population: diabetics Study: JAMA. 2008;299(7):806-813. http://jama.ama-assn.org/cgi/content/full/299/7/806
[ + ] HbA1c	+ 0 -	4.4	0.2
>=6.1% Study: Diabet Med. 2007 Apr;24(4):333-43. PMID: 17367307
[ + ] Elevated ESR	+ 0 -	11.3	0.3
> 70mm/hr. population: diabetics Study: JAMA. 2008;299(7):806-813. http://jama.ama-assn.org/cgi/content/full/299/7/806
[ + ] Probe to Bone	+ 0 -	6.5	0.4
population: diabetics Study: JAMA. 2008;299(7):806-813. http://jama.ama-assn.org/cgi/content/full/299/7/806
[ + ] HbA1c	+ 0 -	12	0.4
>=6.2% Study: Diabet Med. 2007 Apr;24(4):333-43. PMID: 17367307
[ + ] Ulcer > 2cm	+ 0 -	7	0.5
population: diabetics Study: JAMA. 2008;299(7):806-813. http://jama.ama-assn.org/cgi/content/full/299/7/806
[ + ] Fasting Plasma Glucose	+ 0 -	14	0.5
>110mg/dl Study: Diabet Med. 2007 Apr;24(4):333-43. PMID: 17367307