Table 3.

Sensitivity and specificity of ultrasonography in the diagnosis of infantile hypertrophic pyloric stenosis based on (A) PCL and (B) PD

A
Author	Yeara	Casesb	Proportion IHPS	Cut-off value	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Hallam 34	1995	47	0.45	PCL>13 mm.	57.1	96.2	92.3	73.5	78.7
Mullassery 36	2008	343	1	PCL≥14 mm.	99.6	0	98.7	0	98.3
Rohrschneider 35	1998	169	0.5	PCL≥15 mm.	91.8	98.8	98.7	92.2	95.3
Malcolm 30	2009	8	1	PCL≥15 mm.	100	n/e	n/e	n/e	n/e
Iqbal 39	2012	304	0.22	PCL≥15 mm.	97	97	89	99.1	96.7
Lowe 36	1999	84	0.4	PCL≥14 mm	84	100	n/e	n/e	n/e
				PCL≥15 mm	92	97	n/e	n/e	n/e
				PCL≥16 mm.	98	97	n/e	n/e	n/e
				PCL≥17 mm	100	84.9	n/e	n/e	n/e
Vinycomb 51	2021	284	0.5	PCL≥15 mm	95.8	90.4	91.9	95	93.3
				PCL≥17 mm	76.7	98.4	98.2	78.8	86.9
Forster 37	2007	87	0.47	PCL≥16 mm.	85.1	76.9	n/e	n/e	n/e
				PCL>17 mm.	75.8	84.6	n/e	n/e	n/e
Ito 44	2000	57	1	PCL≥18 mm.	98	n/e	n/e	n/e	n/e
Tunell 40	1984	91	0.44	PCL>19 mm.	95	100	100	96.2	97.8
Westra 43	1989	47	0.47	PCL≥19 mm.	54.5	100	100	71.4	78.7
Cohen 42	1987	156	0.07	PCL≥20 mm.	64	n/e	n/e	n/e	n/e
B

Author	Yeara	Casesb	Proportion HPS	Cut- off value	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Rohrschneider 35	1998	169	0.5	PD≥11 mm.	n/e	n/e	n/e	n/e	92
Tunell 40	1984	91	0.44	PD>13 mm.	80	96.1	94.1	86	89
Westra 43	1989	47	0.47	PD≥13 mm.	90.9	100	100	92.6	95.7
Wilson 41	1984	50	0.58	PD≥15 mm.	51.7	100	100	60	72
Cohen 42	1987	156	0.07	PD≥15 mm.	55	n/e	n/e	n/e	n/e
Ito 44	2000	57	1	PD≥15 mm.	93	n/e	n/e	n/e	n/e

IHPS, infantile hypertrophic pyloric stenosis; NPV, negative-predictive value;PCL, pyloric canal length; PD, pyloric diameter; PPV, positive-predictive value.

^aYear published.

^bTotal number of cases included in the study. N/e means not estimable, because there was lack of sufficient data to calculate value and/or value was not reported in publication.