Table 2 Effect of gestational age in the correlation between bilirubin values obtained from AJO-Neo and TSB and the predictive indices of AJO-Neo.

From: Large scale validation of a new non-invasive and non-contact bilirubinometer in neonates with risk factors

Gestational age	Statistical Test	Parameters		Right thumb nail plate	Left thumb nail plate
< 35 weeks	Linear regression analysis	Regression Coefficient (r)		0.84	0.80
		P value		< 0.0001	< 0.0001
		Slope		0.83	0.77
		Intercept		1.52	1.14
	Bland altman analysis	Bias (95% CI)		0.55(− 0.09 to 0.21)	0.002(− 0.17 to 0.17)
		Standard deviation		1.62	1.83
		Limits of agreement		− 3.12 to 3.23	− 3.58 to 3.59
	Accuracy	Above 95th percentile	Sensitivity	0.84	0.69
			Specificity	0.99	0.99
			PPV	0.93	0.89
			NPV	0.98	0.98
		Above 75th percentile	Sensitivity	0.71	0.57
			Specificity	0.97	0.95
			PPV	0.83	0.70
			NPV	0.94	0.91
		Above 40th percentile	Sensitivity	0.88	0.85
			Specificity	0.90	0.88
			PPV	0.80	0.76
			NPV	0.94	0.93
35–38 weeks	Linear regression analysis	Regression Coefficient (r)		0.77	0.74
		P value		< 0.0001	< 0.0001
		Slope		0.64	0.60
		Intercept		3.20	3.69
	Bland altman analysis	Bias (95% CI)		0.67 (0.56 to 0.79)	0.63 (0.51 to 0.75)
		Standard deviation		1.88	1.97
		Limits of agreement		− 3.01 to 4.36	− 3.23 to 4.49
	Accuracy	Above 95th percentile	Sensitivity	0.52	0.58
			Specificity	0.98	0.98
			PPV	0.83	0.80
			NPV	0.94	0.94
		Above 75th percentile	Sensitivity	0.58	0.59
			Specificity	0.94	0.94
			PPV	0.75	0.75
			NPV	0.88	0.88
		Above 40th percentile	Sensitivity	0.72	0.71
			Specificity	0.90	0.90
			PPV	0.86	0.86
			NPV	0.79	0.78
> 38 weeks	Linear Regression Analysis	Regression Coefficient (r)		0.81	0.82
		P value		< 0.0001	< 0.0001
		Slope		0.54	0.52
		Intercept		4.24	4.43
	Bland altman analysis	Bias (95% CI)		0.50 (− 0.11 to 1.12)	0.50 (− 0.11 to 1.11)
		Standard deviation		1.99	1.93
		Limits of agreement		− 3.28 to 4.29	− 3.59 to 4.30
	Accuracy	Above 95th percentile	Sensitivity	0.83	0.73
			Specificity	0.98	0.97
			PPV	0.88	0.90
			NPV	0.90	0.93
		Above 75th percentile	Sensitivity	0.72	0.81
			Specificity	0.96	0.96
			PPV	0.88	0.90
			NPV	0.90	0.83
		Above 40th percentile	Sensitivity	0.79	0.79
			Specificity	0.98	0.98
			PPV	0.98	0.98
			NPV	0.72	0.78

Back to article page

Table 2 Effect of gestational age in the correlation between bilirubin values obtained from AJO-Neo and TSB and the predictive indices of AJO-Neo.

Search

Quick links