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Poorly Diagnostic Findings

Bulimia Nervosa: Sensitivity and Specificity

Introduction: Binging plus/minus purging.

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Tags: Psychiatric Tag this Diagnosis.

Prevalence

Population / CalculatorPrevalence Comments / Study / Link
Young Adult Females 1% Int J Eat Disord. 2001 Nov;30(3):279-87. PMID: 11746287
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The sensitivity and specificity of findings for Bulimia Nervosa are listed below. See the left navigation bar to change the display.

Specific Findings

Finding SensitivitySpecificity Comments, Study
Hypokalemia Edit 19%100%

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

Abnormal Serum Chloride Edit 9%100%

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

Urine Sodium to Chloride Ratio Edit 52%95%

>1.16

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

Fractional Excretion of Sodium Edit 37%95%

>1.04

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

Poorly Diagnostic Findings

Finding SensitivitySpecificity Comments, Study
Abnormal Serum Bicarbonate Edit 25%84%

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

Elevated Serum Amylase Edit Sensitivity = 45%

specificity not assessed.

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