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Table 4 Inter-rater agreement between data obtained using Mini-FLOTAC and FECPAKG2 to categorise strongyle egg shedding intensities

From: Comparison of FECPAKG2, a modified Mini-FLOTAC technique and combined sedimentation and flotation for the coproscopic examination of helminth eggs in horses

Category Mini-FLOTACa Category FECPAKG2b Numberc % category % Correct
% Incorrect
Cohen’s κ Meand
Mediand
Ranged
 < 50 Matching 777 72.82 92.03
7.97
0.777 3.2
0
0–45
Higher 32 3.00 135.0
90
90–630
 ≥ 50 Lower 53 4.97 21.2
0
0–45
Matching 205 19.21 205.9
135
90–5175
- Error rate I (%)e   53/258   20.5    
- Error rate II (%)f   60/215   27.9    
 < 100 Matching 828 77.60 91.94
8.06
0.731 6.7
0
0–90
Higher 33 3.09 205.9
135
135–630
 ≥ 100 Lower 53 4.97 50.1
45
0–90
Matching 153 14.34 714.4
405
135–5175
- Error rate I (%)e   52/206   25.2    
- Error rate II (%)f   59/189   31.2    
 < 200 Matching 898 84.16 93.53
6.47
0.707 14.8
0
0–180
Higher 26 2.44 432.7
315
225–2340
 ≥ 200 Lower 43 4.03 94.2
90
0–180
Matching 100 9.37 957.2
630
225–5175
- Error rate I (%)e   43/143   30.1    
- Error rate II (%)f   43/121   35.5    
  1. aMini-FLOTAC data were used to categorise samples using three different thresholds (50, 100 and 200 epg)
  2. bSamples were counted depending on whether FECPAKG2 placed the sample in the same category (matching) or in another (higher, lower)
  3. cNumber of samples out of N = 1067 in total
  4. dMean, median and range of the epg determined by FECPAKG2 in the respective category
  5. ePercentage of samples classified as above the threshold by Mini-FLOTAC but below the threshold by FECPAKG2
  6. fPercentage of samples classified as above the threshold by FECPAKG2 but below the threshold by Mini-FLOTAC