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. 2014 Sep;52(9):3250–3258. doi: 10.1128/JCM.00816-14

TABLE 4.

Agreement between culture method and real-time PCR to detect Salmonella-positive and -negative samples

Sample type Sample identification by culture No. of samples identified by real-time PCR to be:
Total no. of samples Observed agreement (%) Kappa coefficient
Positive Negative
Eggshells Positive 8 1 9 99.14 0.94
Negative 0 114 114
Total 8 115 123
Feces Positive 10 18 28 87.14 0.47
Negative 0 112 112
Total 10 130 140
Egg belt Positive 37 3 40 95 0.87
Negative 4 96 100
Total 41 99 140
Dust Positive 25 16 41 80.61 0.58
Negative 3 54 57
Total 28 70 98
All types Positive 80 38 118 91.02 0.73
Negative 7 376 383
Total 87 414 501