logPAPPA: Manual least squares fit to the Merz et al. (2016) data using...

Description Usage Arguments Value References

View source: R/t21.R

Description

Manual least squares fit to the Merz et al. (2016) data using a 10th order polynomial

Usage

1
logPAPPA(crlbe)

Arguments

crlbe

crown rump length (in mm) at the time of the serum sampling

Value

The expected value of logPAPPA (from a 10th order polynomial fitted to the data of Merz et al.)

References

Merz, E., C. Thode, B. Eiben, and S. Wellek. 2016. “Prenatal Risk Calculation (PRC) 3.0: An Extended Doe-Based First-Trimester Screening Algorithm Allowing for Early Blood Sampling.” Ultrasound International Open 2: E19–E26. doi:10.1055/s-0035-1569403.


hoehleatsu/trisomy21risk documentation built on Sept. 19, 2020, 8:44 p.m.