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Table 3 Teacher to NHANES and MGH referent median ratios

From: Serum PCB levels and congener profiles among teachers in PCB-containing schools: a pilot study

PCB Cong-ener

18 teacher median (ng/g serum)

MGH referent median (ng/g serum)

Ratio 18 teachers:MGH referent

Teachers < 50 yrs median (ng/g serum)

Ratio teachers < 50 yrs:MGH referents

NHANES median subjects < 50 yrs old/ > 50 yrs (ng/g serum)

RHAf

6 a

0.0017

0.0001

16.9931

0.0028

27.6006

 

0.001

8 a,e

0.0071

0.0001

71.1125

0.0067

67.2269

 

0.001

16 e

0.0038

0.00113

3.3367

0.0033

2.9499

 

0.005

18 e

0.0033

0.00198

1.6906

0.0025

1.2732

 

0.003

25 a

0.0012

0.0001

12.1379

0.0005

5

 

0.024

26 a

0.0008

0.0001

7.7850

0.0008

8

 

0.016

28 b,c,e

0.0222

0.00757

2.9357

0.0223

2.9417

0.031/0.030

0.12

31 e

0.0023

0.00048

4.7290

0.0017

3.5014

 

0.019

33 a,b,e

0.0185

0.0001

185.483

0.01600

159.663

 

0.011

37 a

0.0040

0.0001

40.4865

0.0025

25.2101

 

0.07

41 a

0.0016

0.0001

16.129

0.0009

8.7719

 

0.008

44 d,e

0.0034

0.00158

2.1274

0.0032

2.0416

0.013/0.012

0.009

47 a

0.0574

0.0068

8.4379

0.0836

12.2961

 

0.03

49

0.0031

0.00057

5.5081

0.0023

4.0800

0.008/0.007

0.01

52 c,e

0.0054

0.00254

2.1201

0.0048

1.8748

0.002/0.017

0.009

60 b, d

0.0029

0.0024

1.1942

0.0026

1.0776

 

0.06

66 b,d,e

0.0159

0.0042

3.7751

0.0106

2.5284

0.008/0.009

0.07

70 a,d,e

0.0070

0.00093

7.5341

0.0053

5.7094

 

0.05

74 b

0.0561

0.0331

1.6937

0.0364

1.1007

0.028/0.055

0.27

84

0.0009

0.00034

2.5577

0.0009

2.5355

 

0.04

87 a

0.0032

0.0001

31.7540

0.0031

30.9734

0.005/0.005

0.016

95 e

0.0089

0.0042

2.1207

0.0103

2.4565

 

0.01

97 a

0.0052

0.0001

52.1779

0.0047

46.5116

 

0.06

99

0.0444

0.0344

1.2923

0.0377

1.0959

0.024/0.036

0.28

101 e

0.0173

0.0046

3.7594

0.0133

2.89271

0.010/0.009

0.03

105

0.0142

0.007

2.0222

0.0082

1.1699

0.006/0.010

0.32

110 d

0.0081

0.0035

2.3041

0.0078

2.2167

0.007/0.007

0.014

118

0.0795

0.0595

1.3369

0.0613

1.0301

0.031/0.059

0.5

128

0.0029

0.0008

3.6754

0.0025

3.1512

0.001/0.001

0.3

135

0.0042

0.0015

2.7809

0.0043

2.8736

 

0.02

136 a

0.0043

0.0001

43.1323

0.00420

42.0168

 

0.008

138

0.1527

0.158

0.9666

0.0798

0.5053

0.097/0.178

0.6

141

0.0024

0.007

0.3456

0.0018

0.2506

 

0.06

146

0.0353

0.0215

1.6404

0.0189

0.8794

0.013/0.027

1.6

149 a

0.0133

0.00016

83.329

0.0142

88.4956

0.004/0.004

0.04

151

0.0073

0.0015

4.8602

0.0070

4.6784

0.002/0.002

0.03

153

0.2611

0.2016

1.2953

0.1561

0.7745

0.132/0.251

1.1

156

0.0407

0.0272

1.4973

0.0140

0.5156

0.022/0.044

2.3

157

0.0109

0.0084

1.2961

0.0061

0.7310

0.005/0.010

1.1

167

0.0121

0.0074

1.6395

0.0079

1.0669

0.004/0.009

1.2

170

0.0806

0.06

1.3430

0.0368

0.6140

0.042/0/081

2

171

0.0106

0.0061

1.7353

0.0059

0.9643

 

0.7

174 a

0.0078

0.0001

77.771

0.0071

70.7965

 

0.024

180

0.2278

0.142

1.6045

0.1067

0.7516

0.117/0.229

2.9

183

0.0280

0.0172

1.6255

0.0151

0.8788

0.010/0.019

0.5

187

0.0595

0.0445

1.3362

0.0293

0.6587

0.028/0.057

1.4

189

0.0036

0.0029

1.2403

0.0009

0.3025

0.001/0.001

2.6

194

0.0633

0.03

2.1090

0.0198

0.6583

0.026/0.056

3.1

195

0.0104

0.007

1.4849

0.0042

0.6002

0.006/0.012

1.1

196

0.0329

0.016

2.0590

0.0176

1.1029

0.022/0.042

0.8

199

0.0442

0.031

1.4271

0.0167

0.5376

0.023/0.053

0.04

203

0.0399

0.016

2.4930

0.0146

0.9159

 

1.8

206

0.0257

0.016

1.6070

0.0113

0.7090

0.014/0.032

2.1

209

0.0086

0.0067

1.2903

0.0043

0.6433

0.007/0.020

1.8

201/177

0.01210

0.0093

1.3007

0.0101

1.0843

0.008/0.016

2.9/1

  1. Legend: Superscripts refer to congeners that have been identified as markers of occupational or environmental, non-dietary PCB exposures. Congeners included in the NHANES data are in bold font.
  2. Congeners identified as markers of non-dietary exposure
  3. aHerrick, et al., 2007
  4. bLoutano, et al., 1991
  5. cKontas, et al., 2004
  6. dWingfors, et al., 2008
  7. eDeCaprio, et al., 2005
  8. fRelative Human Accumulation factors, Brown, 1992 (Ref 13)