The proportion of procedures performed for DNA analysis increased slightly from 1.6% in 1993 to 3.0% in 2016, but the difference did not reach statistical significance (OR 1.1; p = 0.052) (see Diagram 2 ).
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In-house genetic counseling increases the detection of abnormal karyotypes-a 26-year experience in prenatal diagnosis in a single tertiary referral hospital in Poland.
1
0.0520
0.0520