Table 2.

Descriptive Statistics for CNVs Identified in the POAG Cohort

	Two Chip Mapping 500K Array Set (CNAG and PennCNV)	SNP 5.0 Array (dChip and PennCNV)
Arrays, n (QC Pass)	400 (376)	200 (194)
Deletions, average across analysis programs	657	870
Duplications, average across analysis programs	526	595
Average number of CNVs per person	3.14	7.55
Average size of deletions (SD)	267,343 bp (409,790)	99,024 bp (226,711)
Average size of duplications (SD)	571,490 bp (611,411)	272,612 bp (380,289)

Data from the two programs used to analyze the arrays has been averaged to reflect array performance as opposed to program performance. The NspI and StyI subarrays from the 500K mapping set were analyzed separately for CNV detection. Data from the two-chip mapping 500K array presented here represent an average between programs and between the NspI and StyI chips. QC, quality control.