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Table 4 Biological measurements in blood and urine in all participants and according to seafood and n-3 supplement intake, given as mean ± SD or median.

From: A short food frequency questionnaire to assess intake of seafood and n-3 supplements: validation with biomarkers

  

Seafood intake and n-3 supplement intake

 

All

Q1

Q2

Q3

Q4

 

(n = 53)

(n = 12)

(n = 17)

(n = 12)

(n = 12)

Sum marine n-3, μg/g RBC

232 ± 65

172 ± 31a

206 ± 36a

260 ± 54b

298 ± 56b

   EPA

43 ± 21

7 ± 13a

21 ± 16a

47 ± 13b

55 ± 26b

   DPA

56 ± 10

48 ± 7a

54 ± 8ab

58 ± 9b

62 ± 11b

   DHA

145 ± 35

117 ± 29a

132 ± 21ab

155 ± 32b

181 ± 27b

25(OH)D, nmol/L

73 ± 33

60 ± 35a

73 ± 35ab

82 ± 33b

83 ± 34b

Selenium, (μg/L)

74 ± 25

72 ± 16a

61 ± 16ab

84 ± 28ac

81 ± 32ac

Iodine, (μg/L)

102

59a

161b

78ac

182bc

  1. Different letters denote significant difference between quartile groups in the same row.