291 / 363
S
chneider
&
A
ndersen
:
J
ournal of
AOAC I
nternational
V
ol
.
98, N
o
. 3, 2015
663
Table 3. Statistical summary of interlaboratory study data
Analyte Matrix
Analyte
added,
µg/kg
Statistical
outlier
lab No.
a
No of
labs
No. of
replicates
b
Trueness
(recovery, %)
Mean
concn,
µg/kg
s
r
s
R
RSD
r
,
%
RSD
R
,
% HorRat
MG Salmon
0.42
10
c
,2
d
12
24
92.8
0.39
0.02 0.05 5.53 13.76 0.26
0.90
None
14
28
92.2
0.83
0.05 0.13 6.13 16.22 0.35
1.75
None
14
28
89.7
1.57
0.06 0.16 3.84 10.33 0.24
Incurred
None
14
28
1.48
0.10 0.36 6.46 24.06 0.56
Catfish
0.42
12
d
,3
e
,11
e
11
22
90.5
0.38
0.04 0.05 10.64 14.15 0.27
0.90
7
c
,12
d
12
24
77.8
0.70
0.04 0.23 5.31 32.61 0.68
1.75
12
d
13
25
79.4
1.39
0.09 0.36 6.79 25.87 0.60
Incurred
None
14
28
3.23
0.18 1.18 5.47 36.38 0.96
Shrimp
0.42
None
13
26
100.0
0.42
0.04 0.14 9.82 32.31 0.63
0.90
None
13
26
97.8
0.88
0.08 0.22 9.37 25.55 0.55
1.75
4
c
12
24
88.0
1.54
0.09 0.56 6.04 36.06 0.85
Inc:0.75
None
13
26
94.7
0.71
0.05 0.16 6.98 22.54 0.47
LMG Salmon
0.42
2
d
,10
e
,14
e
11
22
97.6
0.41
0.02 0.03 3.94 6.72
0.13
0.90
10
d
13
26
103.3
0.93
0.03 0.06 3.11 6.59
0.14
1.75
None
14
28
97.1
1.70
0.09 0.19 5.14 11.17 0.27
Incurred
None
14
28
0.81
0.03 0.12 3.57 14.25 0.31
Catfish
0.42
12
d
13
26
104.8
0.44
0.01 0.02 2.89 5.45
0.11
0.90
12
d
, 5
e
, 6
e
11
22
107.8
0.97
0.03 0.03 2.84 3.50
0.08
1.75
12
d
13
25
101.1
1.77
0.08 0.10 4.71 5.91
0.14
Incurred
12
c
13
26
2.39
0.05 0.16 2.20 6.81
0.17
Shrimp
0.42
11
c
13
26
102.4
0.43
0.01 0.04 3.22 8.98
0.17
0.90
None
14
28
106.7
0.96
0.04 0.07 3.69 7.07
0.16
1.75
None
14
28
101.7
1.78
0.07 0.16 4.14 8.81
0.21
Inc:0.76
4
e
13
26
99.8
0.76
0.03 0.05 3.64 6.22
0.13
CV
Salmon
0.42
2
d
, 13
d
12
24
102.4
0.43
0.02 0.03 4.22 6.15
0.12
0.90
11
c
13
26
103.3
0.93
0.05 0.11 5.49 11.38 0.25
1.75
11
c
13
26
99.4
1.74
0.05 0.18 3.06 10.36 0.25
Incurred
11
c
13
26
0.03
0.01 0.05 42.14 159.6 2.10
Catfish
0.42
14
c
12
24
102.4
0.43
0.02 0.05 5.15 11.04 0.21
0.90
None
13
26
103.3
0.93
0.04 0.11 4.20 12.28 0.27
1.75
14
c
12
23
98.3
1.72
0.03 0.17 3.66 10.10 0.24
Incurred
14
c
, 6
c
11
22
0.15
0.04 0.05 28.64 31.77 0.53
Shrimp
0.42
None
14
28
102.4
0.43
0.06 0.09 13.21 21.41 0.42
0.90
14
d
13
26
104.9
0.94
0.03 0.10 3.11 10.70 0.23
1.75
14
c
13
26
99.4
1.74
0.05 0.23 3.10 13.09 0.31
Inc:0.85
2
d
, 8
c
12
24
97.6
0.83
0.02 0.07 2.30 8.70
0.19
LCV
Salmon
0.42
2
d
13
26
97.6
0.41
0.02 0.05 5.09 11.26 0.22
0.90
None
14
28
102.2
0.92
0.05 0.09 5.50 9.48
0.21
1.75
11
c
, 3
c
12
24
102.8
1.80
0.04 0.15 2.19 8.10
0.20
Incurred
None
14
28
0.39
0.02 0.06 6.17 14.63 0.28
Catfish
0.42
12
d
13
26
109.5
0.46
0.02 0.05 4.60 10.34 0.20
0.90
12
d
13
26
107.8
0.97
0.03 0.08 3.38 8.04
0.18
1.75
4
c
, 12
d
12
23
103.4
1.81
0.06 0.11 3.19 6.30
0.15
Incurred
12
c
13
26
4.04
0.16 0.40 4.01 9.98
0.27
Candidates for 2016 Method of the Year
290