Skip to main content

Table 4 Distribution of maternal serum free β-hCG and PAPP-A MoM values, according to gestational age

From: The impact of temporal variability of biochemical markers PAPP-A and free β-hCG on the specificity of the first-trimester Down syndrome screening: a Croatian retrospective study

  

Free β-hCG MoM

  

PAPP-A MoM

 

Group

Week of gestation

Median

Mean

log10

SD

log10

CV*

(%)

Median

Mean

log10

SD

log10

CV*

(%)

1

10 to 10+6/7

1.04

-0.0655

0.2494

0.04

0.99

0.0043

0.2398

0.55

2

11 to 11+6/7

0.98

0.0294

0.2651

0.09

0.98

-0.0177

0.2204

0.12

3

12 to 12+6/7

0.99

0.0334

0.2619

0.08

0.99

0.0170

0.2335

0.14

4

13 to 13+6/7

1.03

0.0294

0.2637

0.09

1.02

0.0453

0.2290

0.05

 

Total

1.00

0.0067

0.2600

-

0.98

0.0122

0.2307

-

  1. Gaussian distribution was confirmed by Kolgomorov-Smirnov test for normality
  2. MoM - Multiples of the Median
  3. CV* - coefficient of variation