OMB Meeting Book_9-11-14
Table 22: Reproducibility data for soy-based infant formula test sample
Sample ID: Sample 4 P-3972/M-1598 Analyte CMP a
UMP a
GMP a
AMP a
IMP
(mg hg -1 )
(mg hg -1 )
(mg hg -1 )
(mg hg -1 )
(mg hg -1 )
Laboratory
Rep-1
Rep-2
Rep-1
Rep-2
Rep-1
Rep-2
Rep-1
Rep-2
Rep-1
Rep-2
1 2
0.49 0.00
0.47 0.00
0.29 0.00
0.32 0.00
0.26 0.00
0.32 0.00
0.21 0.00
0.13 0.00
0.57 0.71
0.97 1.00
3
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
4
1.00
1.10
0.20
0.20
0.00
0.00
0.00
0.00
0.60
0.60
5
0.58
0.78
0.19
0.00
0.25
0.41
0.29
0.60
0.41
0.59
6
0.88
0.89
0.28
0.25
0.23
0.25
0.16
0.13
0.44
0.43
7
0.56
0.46
0.32
0.28
0.23
0.20
0.00
0.00
0.51
0.50
8
0.44
0.48
0.38
0.38
0.37
0.54
0.22
0.26
0.74
0.86
9
0.59
0.47
0.35
0.22
0.29
0.30
0.00
0.00
0.63
0.61
10
0.66
0.62
0.22
0.23
0.36
0.35
0.13
0.13
0.86
0.88
11
0.90
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
12
0.30
0.35
0.27
0.29
0.49
0.45
0.89
0.76
0.54
0.55
Table 23: Reproducibility analysis for soy-based infant formula test sample
Sample ID: Sample 4 P-3972/M-1598
CMP a
UMP a
GMP a
IMP a
AMP a
Analyte
Seq.
Item
Symbol
Value
Value
Value
Value
Value
1 2
Total number of laboratories
n
12 24
12 24
12 24
12 24
12 24
Total number of replicates
2n
3
Overall mean of all data (grand mean)
0.50
0.19
0.22
0.16
0.54
4
Repeatability standard deviation
S r
0.19
0.05
0.05
0.07
0.11
5
Reproducibility standard deviation
S R
0.34
0.14
0.18
0.25
0.30
6
Repeatability limit in SMPR
≤8%
≤10%
≤10%
≤10%
≤8%
7
Repeatability relative standard deviation
RSD r
38.5%
25.0%
22.9
43.7%
20.4%
8
Reproducibility limit in SMPR
≤16%
≤20%
≤20%
≤20%
≤16%
9
Reproducibility relative standard deviation
RSD R
67.1%
72.0%
82.7%
156.2%
55.7%
10
HorRat value
5.3
5.0
5.8
10.5
4.5
a Several labs reported 0 for these analytes which contributed significantly to poor precision.
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