Table 1.

Characteristics of AMD patients and AMD-free control subjects enrolled in the study

Characteristics	Controls		AMD		p
	Number	Frequency	Number	Frequency
Disease status	116
No AMD
Dry AMD			100	0.37
Wet AMD			170	0.63
Sex
Females	82	0.78	179	0.66	0.0316
Males	23	0.22	92	0.34
Age
≤60	31	0.30	32	0.12	<0.001
≥61	74	0.70	239	0.88
Mean ± SD	68.20 ± 10.95		72.46 ± 8.51
Range	50–88		52–93
Smoking
Ever	32	0.41	68	0.41	0.9251
Never	46	0.59	99	0.59
Living environment
Rural	32	0.38	50	0.30	0.2880
Urban	52	0.62	114	0.70
AMD in family
Yes	3	0.04	33	0.20	<0.001
No	81	0.96	130	0.80

p values for a two-sides χ² test, p values <0.05 are in bold