Pediatric Pneumonia: Likelihood Ratios

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Prevalence

Population / Calculator	Prevalence	Comments / Study / Link
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The likelihood ratios of findings for Pediatric Pneumonia are listed below. See the left navigation bar to change the display.

Good Negative Likelihood Ratio

Cough

1.2

0.5

Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039

Good Positive Likelihood Ratio

Finding	+LR	-LR	Comments, Study
Hypoxemia	4	0.9	Defined as O2 sat <95%. Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Grunting	2.6	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Chest Pain	2.4	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Nasal flaring	2.3	0.8	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039

Poorly Diagnostic Findings

Finding	+LR	-LR	Comments, Study
Wheezing	0.9	1	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Symptom duration >3 days (cough, fever, illness)	1.3	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Vomiting or diarrhea	1.1	1	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Difficulty breathing	1.2	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
fever >39C	1.3	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Rales	1.2	0.9	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039
Poor feeding	1.5	0.7	Study: Shah, S. N., Bachur, R. G., Simel, D. L., & Neuman, M. I. (2017). Does This Child Have Pneumonia? JAMA, 318(5), 462. doi:10.1001/jama.2017.9039