. 2014 Mar 25;4:4459. doi: 10.1038/srep04459

Table 3. VEGF haplotype frequencies of BPD and non-BPD groups.

	Frequency	BPD, n = 110	non-BPD, n = 84	χ²	P-value
-634G/-7C	0.433	51 (46.4%)	33 (39.3%)	0.972	0.32
-634C/-7C	0.407	37 (33.6%)	42 (50.0%)	5.283	0.02
-634G/-7T	0.16	22 (20.0%)	9 (10.7%)	3.059	0.08