Table 2.

Differences in retinal thickness between males and females.

Factors	Males (n = 181)	Females (n = 85)	P value
Age	48.7 ± 10.5	49.7 ± 10.5	0.447
Retina thickness
Center (µm)	240.3 ± 20.4	232.4 ± 19.0	0.002**
Inner Temporal (µm)	307.7 ± 14.5	300.6 ± 13.3	< 0.001**
Inner Superior (µm)	319.9 ± 15.0	314.8 ± 12.8	0.007**
Inner Nasal (µm)	319.2 ± 15.0	311.7 ± 14.4	< 0.001**
Inner Inferior (µm)	317.2 ± 14.6	311.0 ± 13.0	< 0.001**
Outer Temporal (µm)	266.0 ± 12.8	262.4 ± 11.0	0.031*
Outer Superior (µm)	275.7 ± 13.5	277.0 ± 10.7	0.410
Outer Nasal (µm)	293.0 ± 15.7	293.0 ± 13.4	0.914
Outer Inferior (µm)	262.5 ± 13.4	263.5 ± 12.5	0.753

Data are presented as mean ± standard deviation. Retinal thicknesses were analyzed using the Early Treatment Diabetic Retinopathy Study grid. Mann-Whitney U test. *P < 0.05, **P < 0.01.