Bulimia Nervosa: Likelihood Ratios

Introduction: Binging plus/minus purging.

Prevalence

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

Good Positive and Negative Likelihood Ratios

10.4

0.5

>1.16

Study: Int J Eat Disord. 2001 Nov;30(3):279-87. PMID: 11746287

Good Positive Likelihood Ratio

Finding	+LR	-LR	Comments, Study
Hypokalemia	inf	0.8	Study: Int J Eat Disord. 1997 Jan;21(1):95-8. PMID: 8986523
Abnormal Serum Chloride	inf	0.9	not independent of hypokalemia effect (i.e. does not add additional predictive power over hypo-K) Study: Int J Eat Disord. 1997 Jan;21(1):95-8. PMID: 8986523
Fractional Excretion of Sodium	7.4	0.7	>1.04 Study: Int J Eat Disord. 2001 Nov;30(3):279-87. PMID: 11746287

Poorly Diagnostic Findings

1.6

0.9

Study: Int J Eat Disord. 1997 Jan;21(1):95-8. PMID: 8986523

Sensitivity = 45%

specificity not assessed.

Study: Int J Eat Disord. 1999 Sep;26(2):223-7. PMID: 10422613