Performances of birthweight charts to predict adverse perinatal outcomes related to SGA in a cohort of nulliparas

Table 4 Diagnostic performance, sensitivity and false positive rate of neonatal morbidity in neonates with birthweight below different centile thresholds using different charts in comparison with the “Birth in Brazil” chart

Charts	Centile thresholds	Number of events	Rate (%)	Sensitivity (95%CI)	FPR	AUC
Birth in Brazil
	5^th	3	6.0	8.57	4.89	0.518
	10^th	4	4.0	11.43	9.98	0.507
	15^th	5	3.0	14.29	15.07	0.496
	20^th	6	3.0	17.14	20.06	0.485
GROW-Customised
	5^th	2	3.9	5.71	5.09	0.503
	10^th	3	3.0	8.57	10.08	0.492
	15^th	4	2.7	11.43	15.18	0.481
	20^th	6	3.0	17.14	20.17	0.485
Intergrowth-21^st
	5^th	2	3.9	5.71	5.09	0.503
	10^th	4	3.9	11.43	10.19	0.506
	15^th	5	3.3	14.29	15.07	0.496
	20^th	6	3.0	17.14	20.17	0.485
WHO-FGC
	5^th	2	3.9	5.71	5.09	0.503
	10^th	5	5.0	14.29	9.88	0.522
	15^th	5	3.3	14.29	15.18	0.496
	20^th	6	3.0	17.14	20.27	0.484

Abbreviations: AUC Area under ROC curve, FPR False positive rate, WHO World Health Organization, FGC Fetal Growth Charts

ISSN: 1471-2393