Association between the Oxidative Balance Score and Telomere Length from the National Health and Nutrition Examination Survey 1999-2002
Table 3
The baseline characteristics of females by quartiles of the OBS: National Health and Nutrition Examination Survey, United States, 1999–2002a.
Characteristics
Total (1523)
Q1 (384)
Q2 (397)
Q3 (347)
Q4 (395)
Age (year)
0.07
Race/ethnicity
<0.01
Non-Hispanic white (%)
900
204 (74.22)
213 (74.86)
218 (82.52)
265 (84.40)
Non-Hispanic black (%)
196
68 (9.27)
69 (9.23)
28 (3.74)
31 (3.59)
Mexican American (%)
311
79 (4.96)
85 (6.03)
75 (5.12)
72 (4.16)
Other race (%)
40
11 (3.70)
7 (1.64)
11 (3.92)
11 (3.34)
Other Hispanic (%)
76
22 (7.85)
23 (8.25)
15 (4.69)
16 (4.51)
Education
<0.01
Less than 9th grade
119
34 (3.29)
35 (4.01)
31 (3.44)
19 (1.53)
9-11th grade
184
68 (14.55)
46 (8.55)
36 (8.46)
34 (5.86)
High school grad/GED
356
110 (30.35)
103 (29.64)
73 (21.23)
70 (17.12)
Some college or associate degree
498
119 (34.44)
141 (34.81)
118 (34.89)
120 (29.36)
College graduate or above
366
53 (17.36)
72 (22.68)
89 (31.98)
152 (46.12)
Family PIR
<0.01
≤1.3
320
107 (25.62)
99 (20.82)
67 (17.53)
47 (8.46)
1.3-3.5
562
148 (35.72)
135 (29.46)
143 (36.92)
136 (31.12)
>3.5
641
129 (38.66)
163 (49.72)
137 (45.55)
212 (60.42)
Energy (kcal)
<0.01
CRP (mg/dL)
0.22 (0.08, 0.48)
0.24 (0.09, 0.61)
0.22 (0.09, 0.49)
0.22 (0.07, 0.45)
0.18 (0.07, 0.38)
<0.01
Telomere (T/S ratio)
1.04 (0.90, 1.22)
1.03 (0.87, 1.18)
1.03 (0.91, 1.22)
1.03 (0.90, 1.20)
1.08 (0.93, 1.23)
<0.01
Log-transformed telomere (T/S ratio)
0.02
GED: general equivalent diploma; PIR: the ratio of family income to poverty; CRP: C-reactive protein. aData were expressed as the , median (), or counts (weighted percentages).
