The aggregated detection rates by deprivation quintile ranged from 0.78 to 0.83 (see Table 53). There was no clear trend with increasing deprivation. Table 53: Detection rate for trisomy 21 by NZ deprivation quintile, aggregated 2011–2016 True positives False negatives Detection rate NZ deprivation Positive diagnostic test/ infant Positive diagnostic test/ infant quintile diagnosis after increased risk screen diagnosis after low risk screen Quintile 1 148 30 0.83 Quintile 2 123 32 0.79 Quintile 3 107 25 0.81 Quintile 4 106 26 0.80 Quintile 5 73 20 0.78
The aggregated detection rates by deprivation quintile ranged from 0.78 to 0.83 (see Table 53). There was no clear trend with increasing deprivation. Table 53: Detection rate for trisomy 21 by NZ deprivation quintile, aggregated 2011–2016 NZ deprivation quintile True positives False negatives Detection rate Positive diagnostic test/ infant diagnosis after increased risk screen Positive diagnostic test/ infant diagnosis after low risk screen Quintile 1 148 30 0.83 Quintile 2 123 32 0.79 Quintile 3 107 25 0.81 Quintile 4 106 26 0.80 Quintile 5 73 20 0.78
antenatal-screening-down-syndrome-other-conditions-_2016-monitoring-report-sept18.docx