In thecontext of the present example, this means in part that thereis. norelationship between quantitative and verbal ability. In more advanced. models of factor analysis, the condition that the factors are independent. of one another can be relaxed. As for the factor means and variances, the. assumption is that thefactors are standardized.
Is a Pap smear safe when you're pregnant? Pap smears aren't just safe during pregnancy, they're actually a routine part of prenatal care. Your doctor will need to know if you're at risk for cervical cancer and will check to see if you have any STDs, which can cause premature births or even blindness. You'll probably have a Pap at your first pregnancy checkup.
The blood tests measure 2 substances found in the blood of all pregnant women: Pregnancy-associated plasma protein screening (PAPP-A) --a protein produced by the placenta in early pregnancy. Abnormal levels are associated with an increased risk for chromosome abnormality.