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Table 4 Association of γ-T with lung spirometry (within quartiles of α-tocopherol) at year 0 of CARDIA

From: The vitamin E isoforms α-tocopherol and γ-tocopherol have opposite associations with spirometric parameters: the CARDIA study

Quartiles of α-T

N

Difference in FEV1per 10 μM γ-T

P value

Difference in FVC per 10 μM γ-T

P value

Difference in FEV1/FVC (%) per 10 μM γ-T

P value

(μM)

β

β

β

A

BLACKS

5.73-17.21

596

-207.3

0.05*

-174.8

0.16

-1.0

0.55

17.22-20.11

522

8.2

0.94

-119.7

0.32

2.4

0.10

20.12-23.80

407

-103.4

0.38

-158.6

0.25

0.8

0.58

23.81-84.80

271

-103.9

0.06

-81.3

0.22

-0.8

0.29

B

WHITES

5.73-17.21

317

-282.8

0.10 #

-265.7

0.17

-1.2

0.60

17.22-20.10

389

-195.0

0.19

-271.3

0.14

0.7

0.71

20.11-23.80

500

-80.7

0.44

-42.3

0.73

-1.2

0.42

23.81-84.80

604

-80.1

0.25

-164.1

0.05*

0.9

0.34

C

ALL PARTICIPANTS

5.73-17.21

913

-208.3

0.02*

-171.3

0.11 #

-1.1

0.42

17.22-20.10

911

-58.7

0.50

-175.1

0.09 #

2.0

0.09 #

20.11-23.80

907

-82.4

0.29

-82.4

0.37

-0.3

0.77

23.81-84.80

875

-95.1

0.02*

-107.0

0.03*

-0.2

0.73

  1. Year 0 of CARDIA: Adjustments: center, age, age2, height, height2, sex, BMI, smoking status.
  2. *and boldface, significant; #and boldface, trend.