The reliability of POCUS in the diagnosis of community-acquired pneumonia in critically ill pediatric patients: a cross-sectional study

Egyptian Pediatric Association Gazette

Table 11 Agreement between CXR, LUS, and CCT as regards the diagnosis of CAP

		LUS
		Positive	Negative	Total
CXR	Positive	21	0	21
	Negative	16	5	21
	Total	37	5	42
Index	Estimate	SE	Lower 95% CI	Upper 95% CI
Cohen’s kappa (κ)	0.238	0.097	0.048	0.428
Bias-adjusted kappa (BAK)	0.109
Prevalence and bias-adjusted kappa (PABAK)	0.238
		CCT
CXR		Positive	Negative	Total
	Positive	21	0	21
	Negative	19	2	21
	Total	40	2	42
Index	Estimate	SE	Lower 95% CI	Upper 95% CI
Cohen’s kappa (κ)	0.095	0.065	− 0.033	0.223
Bias-adjusted kappa (BAK)	− 0.138
Prevalence and bias-adjusted kappa (PABAK)	0.095
		CCT
		Positive	Negative	Total
LUS	Positive	37	0	37
	Negative	3	2	5
	Total	40	2	42
Index	Estimate	SE	Lower 95% CI	Upper 95% CI
Cohen’s kappa (κ)	0.540	0.227	0.095	0.985
Bias adjusted kappa (BAK)	0.532
Prevalence and bias adjusted kappa (PABAK)	0.857

Numbers in crosstabs are counts. SE Standard error, 95% CI 95% confidence interval, CXR Chest X-ray, LUS Lung ultrasound, CCT Chest CT scan