Table 1 Demographic and individual characteristics of the study population according to the presence of AMD status (N = 4831) in NHANES (2005 − 2008 ).

From: A cross-sectional observational study of the association between biochemistry profiles and the risk of age-related macular degeneration

 

non-AMD (N = 4458)

AMD (n = 373)

P value

Age (years)

58.3 (12.0)

70.3 (11.2)

< 0.001**

Gender [n (%)]

Male

2242 (50.3%)

193 (51.7%)

0.628

Female

2216 (49.7%)

180 (48.3%)

 

Race/ethnicity [n (%)]

< 0.001**

Mexican American

696 (15.6%)

45 (12.1%)

 

Other Hispanic

305 (6.8%)

17 (4.6%)

 

Non-Hispanic White

2402(53.9%)

266 (71.3%)

 

Non-Hispanic Black

911 (20.4%)

34 (9.1%)

 

Non-Hispanic Asian

144 (3.2%)

11 (2.9%)

 

Education [n (%)]

0.081

Less than 9th grade

578 (13.0%)

56 (15.0%)

 

9-11th grade

679 (15.2%)

45 (12.1%)

 

High school

1085 (24.3%)

109 (29.2%)

 

Some college or AA degree

1155 (25.9%)

94 (25.2%)

 

College graduate or above

961 (21.6%)

69 (18.5%)

 

Family Income-to-Poverty Ratio

2.82 (1.63)

2.51 (1.48)

< 0.001**

BMI (kg/m2)

29.3 (6.51)

28.4 (5.68)

0.006**

Hypertension [n (%)]

1980 (44.4%)

207 (55.5%)

0.001**

Smoking [n (%)]

2347 (52.6%)

205 (55.0%)

0.420

Alcohol [n (%)]

3075 (69.0%)

243 (65.1%)

0.141

  1. Note: **P < 0.01; AMD: age-related macular degeneration; NHANES: national health and nutrition examination survey.