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Table 1 Age and sex adjusted mean of serum antioxidant across quartiles of telomere length

From: Serum lipophilic antioxidants levels are associated with leucocyte telomere length among US adults

Variables

Quarters of telomere length

 
 

Q1

Q2

Q3

Q4

P-trend

N

1068

1057

1068

1066

 

TL, Mean ± SEM

0.76 ± 0.02

0.95 ± 0.01

1.10 ± 0.04

1.41 ± 0.10

 

α-carotene(umol/L)

0.062 ± .004

0.080 ± 002

0.084 ± 008

0.087 ± 003

< 0.001

trans-β-carotene(umol/L)

0.29 ± .012

0.35 ± .01

0.36 ± .01

0.38 ± .01

< 0.001

cis- β -carotene(umol/L)

0.017 ± .001

0.020 ± .001

0.021 ± .001

022 ± .001

< 0.001

β -cryptoxanthin(umol/L)

0.172 ± .005

0.197 ± .005

0.196 ± .005

0.195 ± .005

< 0.001

g-tocopherol(umol/L) (vitamins E)

5.93 ± .10

5.75 ± .10

5.66 ± .10

5.30 ± .10

< 0.001

Combined Lutein/zeaxanthin(umol/L)

0.270 ± .005

0.289 ± .005

0.295 ± .005

0.297 ± .005

< 0.001

trans-lycopene(umol/L)

0.398 ± .006

0.411 ± .006

0.417 ± .006

0.417 ± .006

< 0.001

Retinyl palmitate(umol/L)

0.085 ± .003

0.081 ± .003

0.086 ± .003

0.094 ± .003

< 0.001

Retinyl stearate(umol/L)

0.018 ± .001

0.016 ± .001

0.017 ± .001

0.019 ± .001

< 0.001

Retinol(umol/L) (vitamins A)

2.08 ± .020

2.09 ± .018

2.11 ± .018

2.11 ± .018

< 0.001

α -tocopherol(umol/L) (vitamins E)

30.88 ± .46

31.39 ± .43

31.77 ± .43

31.12 ± .45

< 0.001

  1. P-values for linear trend across quartiles of telomere length. Variables were compared across quartiles of telomere length using analysis of co-variance (ANCOVA) test