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. 2016 Sep 15;16:982. doi: 10.1186/s12889-016-3656-y

Table 4.

Correlations between fruit and vegetablea intake and plasma carotenoids concentrations

Crude Pearson Correlations Partial Correlations Adjusted for Energy Intake Partial Correlations Adjusted for Nausea Partial Correlations Adjusted for Energy Intake and Nauseab
FVQ (n = 48)
Retinol 0.21 N/A 0.23 N/A
α-tocopherol −0.17 N/A −0.06 N/A
Lutein −0.08 N/A −0.07 N/A
Zeaxanthin −0.16 N/A −0.11 N/A
β-cryptoxanthin 0.02 N/A 0.04 N/A
α-carotene 0.11 N/A 0.13 N/A
β-carotene 0.05 N/A 0.10 N/A
Lycopene −0.27 N/A −0.23 N/A
Total carotenoids −0.16 N/A −0.05 N/A
Food record (n = 48)
Retinol 0.04 −0.06 0.04 −0.05
α-tocopherol −0.21 −0.24 −0.19 −0.23
Lutein 0.15 0.15 0.15 0.15
Zeaxanthin 0.01 −0.06 0.03 −0.04
β-cryptoxanthin 0.07 −0.02 0.07 −0.02
α-carotene 0.07 0.02 0.08 0.02
β-carotene −0.08 −0.11 −0.06 −0.10
Lycopene −0.11 −0.22 −0.09 −0.20
Total carotenoids −0.20 −0.24 −0.18 −0.23
FFQ (n = 33)
Retinol 0.30 0.31 0.31 0.32
α-tocopherol −0.06 −0.05 0.01 0.02
Lutein 0.24 0.24 0.24 0.25
Zeaxanthin 0.18 0.17 0.22 0.21
β-cryptoxanthin 0.34 0.31 0.35* 0.32
α-carotene 0.19 0.21 0.21 0.22
β-carotene 0.19 0.16 0.22 0.19
Lycopene 0.08 0.13 0.11 0.17
Total carotenoids −0.02 −0.01 0.05 0.07

Abbreviations: FVQ fruit and vegetable questionnaire, FFQ food-frequency questionnaire, N/A not available

*p = 0.0471

aExcluding potatoes; bCorrelations were similar when they were also adjusted for age