Table 2 Parameters of the expanded newborn screening program.

Total screening number

146152

Positive cases of initial screening

3387

Positive rate of initial screening (%)

2.32

Positive recall cases of initial screening

2729

Positive recall rate of initial screening (%)

80.57

Positive cases after recall

305

Positive rate of recall (%)

11.18

Confirmed cases

77

Positive predictive value (%)

25.25

Sensitivity (%)

100.00

Specificity (%)

99.84

incidence

1:1898 (1:1949 without mother)

Amino acid disorders

1:4176

Organic acid disorders

1:5220

Fatty acid oxidation disorders

1:10439 (1:12179 without mother)