Table 2 Concentrations of PFAAs, OCPs, PCBs and PBDEs before and 12 months after bariatric surgery

Mean

Median (5th; 95th persentile)

Mean

Median (5th, 95th pers.)

Mean

Median (5th; 95th persentile.)

p-value*

Compound

n^c

ng/ml

ng/ml

n^c

ng/ml

ng/ml

%

%

PFHxA

161

0.16

0.03 (0.03; 0.59)

118

0.16

0.03 (0.03, 0.56)

150^b

0.00 (-92; 1108)

0.67

PFOA

161

2.63

2.56 (1.04; 4.66)

118

2.60

2.50 (1.00, 4.80)

0.1

-4.8 (-30; 33)

0.017

PFNA

161

0.96

0.83 (0.30; 2.19)

118

0.97

0.84 (0.29, 2.55)

-1.2

-6.5 (-38; 46)

0.029

PFDA

161

0.27

0.23 (0.08; 0.60)

117

0.27

0.24 (0.08, 0.72)

4.4

-5.6 (-52; 92)

0.258

PFUnA

161

0.19

0.15 (0.02; 0.50)

118

0.18

0.13 (0.02, 0.54)

11

-3.3 (-77; 142)

0.042

PFHxS

161

1.42

1.18 (0.54; 2.90)

118

1.46

1.35 (0.50, 2.88)

9.9

4.3 (-50; 89)

0.332

PFOS

161

3.91

3.2 (0.89; 10.3)

118

3.91

3.32 (0.98, 8.76)

1.1

-3.4 (-32; 50)

0.038

sumPFCA

161

4.20

4.07 (1.8; 7.52)

118

4.17

3.94 (1.64, 7.77)

-1.0

-6.1 (-29; 33)

0.003

sumPFSA

161

5.33

4.49 (1.75; 12.3)

118

5.37

4.82 (1.93, 11.3)

1.2

-2.1 (-31; 45)

0.222

Mean

Median (5th; 95th pers.)

Mean

Median

Mean

Median (5th; 95th pers.)

p-value*

Compound

n^c

ng/g lipid

ng/g lipid

n^c

ng/g lipid

ng/g lipid

%

%

HCB

149

12.8

10.9 (5.24; 23.3)

95

24.1

18.3 (7.31, 56.9)

113

77 (-12; 330)

<0.001

BetaHCH

149

17.1

12.7 (2.60; 28.6)

95

19.2

17.6 (3.79, 41.3)

49

39 (-19; 147)

<0.001

Transnonachlor

149

9.30

7.26 (1.59; 24.8)

95

14.5

10.9 (1.92, 41.6)

73

58 (-1.5; 190)

<0.001

p,p′-DDE

149

151

100 (16.8; 504)

95

229

157 (23.3, 688)

73

67 (-2.0; 182)

<0.001

PCB-118

149

13.3

10.0 (3.09; 33.3)

95

21.3

18.4 (4.82, 52.8)

68

62 (-8.6; 182)

<0.001

PCB-153

149

75.4

62.8 (19.4; 193)

95

125

108 (28.4, 314)

73

61 (-0.10; 188)

<0.001

PCB-138

149

39.8

32.2 (10.0; 103)

95

64.5

55.3 (14.0, 181)

71

65 (6.4; 176)

<0.001

PCB-156

149

3.98

3.40 (0.91; 9.88)

95

6.64

6.15 (1.11, 15.5)

84

65 (-8.7; 254)

<0.001

PCB-180

149

42.0

35.8 (11.2; 109)

95

69.2

62.0 (13.9, 164)

74

60 (-19; 196)

<0.001

PCB-170

149

18.1

15.5 (4.74; 46.2)

95

29.7

28.0 (6.38, 65.4)

70

59 (-3.5; 182)

<0.001

BDE-47

149

3.47

1.99 (1.11; 7.01)

95

4.48

2.17 (1.33, 12.2)

31

12 (-40; 183)

0.001

BDE-153

149

1.32

0.92 (0.31; 3.54)

95

2.40

1.53 (0.33, 8.82)

80

61 (-27; 241)

<0.001

BDE-209

149

11.8

4.79 (1.60; 48.5)

95

15.4

5.02 (2.07, 62.7)

213

11 (-88; 1132)

0.436

sumPCB

149

193

163 (50.8; 482)

95

316

271 (72.2, 786)

72

62 (-3.6; 186)

<0.001

sumBDE

149

16.6

8.94 (3.71; 59.5)

95

22.3

11.8 (4.83, 75.6)

115

21 (-79; 633)

0.036