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Table 2 Statistical values calculated from the percent X allele signals of the four XA markers for samples grouped together by karyotype

From: Molecular diagnostic testing for Klinefelter syndrome and other male sex chromosome aneuploidies

Karyotype 48, XXYY (n = 45) 46, XY (n = 206)
Marker XA1 XA2 XA3 XA4 XA1 XA2 XA3 XA4
Average 56.8 54.1 48.5 50.4 42.3 35.3 33.0 32.0
Median 56.4 54.0 48.9 50.8 42.1 35.1 33.3 31.7
Std Dev 1.74 2.57 2.43 3.47 2.51 2.03 2.99 3.56
Maximum 59.7 59.1 51.1 57.8 60.2 42.6 37.2 51.3
Minimum 52.2 49.5 35.3 43.8 35.5 27.4 0.0 20.8