Table 1

Chromosome anomalies detected using conventional cytogenetics in newborn screens

Reference	Sample no.	Rearrangements		Detection rate (%)
Reference	Sample no.	Structural	Numerical	Detection rate (%)
NC, not considered in this study.
*Data from six studies reviewed by authors in addition to their own data using conventional staining methods.
Jacobs et al, 1992¹¹	14677	112	NC	0.7
Hansteen et al, 1982²³	1830	25	11	1.9
Hamerton et al, 1975¹⁰	46150*	103	155	0.56