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Table 3 One way ANOVA for 3-HPMA vs laboratories (lab1, 2, 3, and 4) for each set of samples

From: An inter-laboratory comparison of urinary 3-hydroxypropylmercapturic acid measurement demonstrates good reproducibility between laboratories

  

Mean 3-HPMA (ng/ml)

StDev

CoV

P value (one-way Anova)

Sample 1

lab1

36.8

6.1

16.5

0.186

 

lab2

31.13

0.7

2.1

 
 

lab3

< LOQ

NA

NA

 
 

lab4

< LOQ

NA

NA

 

Sample 2

lab1

433

32.2

7.4

0.002

 

lab2

477.7

12.4

2.6

 
 

lab3

399

2.6

0.7

 
 

lab4

403.3

1.5

0.4

 

Sample 3

lab1

1224

81.2

6.6

0.004

 

lab2

1316.7

40.4

3.1

 
 

lab3

1163.3

15.3

1.3

 
 

lab4

1100

36.1

3.3

 

Sample 4

lab1

3614

105.4

2.9

0.000

 

lab2

3856.7

100.2

2.6

 
 

lab3

3420

50

1.5

 
 

lab4

3223.3

15.3

0.5

 

Sample 5

lab1

50.1

11.4

22.8

0.182

 

lab2

47.1

1.1

2.4

 
 

lab3

< LOQ

NA

NA

 
 

lab4

35.8

1.1

3

 

Sample 6

lab1

372.4

2.77

0.7

0.000

 

lab2

376

6

1.6

 
 

lab3

287.7

16.4

5.7

 
 

lab4

282.7

33.6

11.9

 

Sample 7

lab1

890

62.4

7

0.000

 

lab2

848.7

22.7

2.7

 
 

lab3

669

54.1

8.1

 
 

lab4

611.3

51.9

8.5

 

Sample 8

lab1

1082

39

3.6

0.000

 

lab2

1180

20

1.7

 
 

lab3

888.3

32.7

3.7

 
 

lab4

937.3

28.4

3

 

Sample 9

lab1

1346

119.1

8.85

0.006

 

lab2

1383.3

11.5

0.8

 
 

lab3

1170

60.8

5.2

 
 

lab4

1041.3

128.5

12.3

 
  1. gNA: not applicable, fewer than three data points due to at least one measure < LOQ.