Table 1. Background characteristics of study participants.

	Normal	RP	P-value
N	223	150
Age	64.0 ± 14.0 (11–78)	61.1 ± 15.1 (19–87)	P = 0.06 (Student’s t-test)
Sex, female	123 (55.2%)	74 (49.3%)	P = 0.29 (Fisher’s exact test)
Eye, left	119 (53.4%)	70 (46.7%)	P = 0.21 (Fisher’s exact test)

Notes:

There are no significant differences in age, female ratio and left ratio between normal images and retinitis pigmentosa images.

Age (years) is reported as the mean ± standard deviation with (range).

Sex, eye are shown as number with (%).

RP, Retinitis Pigmentosa.