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. 2014 Mar 6;13:80. doi: 10.1186/1475-2875-13-80

Table 1.

Insecticide levels of total sample of collected nets, by site and collection time

Site   No of nets (no tested in bio-assay) Deltamethrin concentration (mg/m 2 ) (by XRF) Mean (SD) No (%) of nets with <10 mg/m 2 deltamethrin Manufacturer’s reported batch mean deltamethrin concentration (MRBMC) (mg/m 2 ) Difference between field XRF and MRBMC (%)
A
  
 25 (4)
 64.7 (13.3)
 0
 59.9
 8.0
B
  
 25 (4)
 67.6 (10.8)
 0
 59.9
 12.9
C
  
 25 (4)
 69.7 (14.3)
 0
 59.7
 16.8
D
  
 25 (4)
 74.8 (12.5)
 0
 59.7
 25.3
E
  
 25 (4)
 58.0 (14.3)
 0
 60.0
 -3.3
F
  
 25 (4)
 58.1 (20.0)
 1 (4)
 60.0
 -3.2
G
  
 5 (0)
 76.9 (5.6)
 0
 58.9
 30.6
H
  
 14 (0)
 72.9 (9.5)
 0
 58.9
 23.8
J
  
 20 (4)
 63.8 (8.6)
 0
 60.9
 4.8
 
 3–6 months
189 (28)
66.2 (14.6)
1 (0.5)
59.8*
10.8
K
  
 20 (4)
 53.2 (15.9)
 0
 59.9
 -11.2
L
  
 20 (4)
 38.1 (19.9)
 1 (5)
 59.1
 -35.5
M
  
 20 (4)
 58.5 (14.7)
 0
 59.1
 -1.0
N
  
 20 (4)
 41.6 (19.3)
 1 (5)
 59.7
 -30.3
P
  
 20 (4)
 46.9 (19.9)
 0
 57.7
 -18.7
Q
  
 20 (4)
 48.1 (19.0)
 0
 59.1
 -18.6
R
  
 20 (4)
 30.7 (26.8)
 6 (30)
 60.0
 -48.8
S
  
 20 (4)
 50.4 (26.0)
 1 (5)
 61.0
 -17.4
T
  
 20 (4)
 47.1 (18.0)
 0
 58.9
 -20.0
U
  
 20 (4)
 41.6 (19.3)
 1 (5)
 59.1
 -29.6
J
  
 20 (4)
 28.7 (14.5)
 2 (10)
 60.9
 -52.9
 
 14-20 months
220 (44)
44.1 (21.2)
12 (5.5)
59.5*
-25.9
K
  
 20 (4)
 40.0 (19.3)
 2 (10)
 59.9
 -33.2
L
  
 20 (4)
 46.6 (13.9)
 0
 59.1
 -21.2
M
  
 20 (4)
 54.3 (21.1)
 0
 59.1
 -8.1
N
  
 20 (4)
 34.1 (14.7)
 0
 59.7
 -42.9
P
  
 20 (4)
 35.5 (16.6)
 1 (5)
 57.7
 -38.5
Q
  
 20 (4)
 42.0 (18.7)
 0
 59.1
 -28.9
R
  
 20 (4)
 32.5 (18.0)
 4 (20)
 60.0
 -45.8
S
  
 20 (4)
 45.3 (20.7)
 0
 61.0
 -25.7
T
  
 20 (4)
 38.0 (14.0)
 0
 58.9
 -35.5
U
  
 20 (4)
 42.4 (23.2)
 1 (5)
 59.1
 -28.3
  26-32 months 200 (40) 41.1 (18.9) 8 (4.0) 59.4* -30.8

*Average of the sites in the time group of collection.