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. 2012 Nov 9;6:1859–1864. doi: 10.2147/OPTH.S36685

Table 3.

Fundus abnormalities in Down syndrome (DS) and control groups

Disorder DS group n (%) Normal group n (%) χ2 P-value
Cupped disc 4 (9.52) 18 (23.1) 1.69 0.193F
Optic atrophy 2 (4.76) 6 (7.67) 0.05 0.714F
Persistent hyaloid artery 0 (0.0) 1 (1.28) 0.10 1.000F

Notes:

F

P-value derived from Fisher’s exact test;

C

P-value derived from Pearson’s chi-square.