Table 4 McNemar test and kappa statistics evaluating electrostatic air samplers above the area where C. jejuni-infected birds were kept with increasing and decreasing animal numbers.

From: Monitoring of Campylobacter jejuni in a chicken infection model by measuring specific volatile organic compounds and by qPCR

Electrostatic air samplers

C. jejuni status of birds according to cultivation-based method

Row total

C. jejuni-negative

C. jejuni-positive

C. jejuni-negative

Frequency

5

7

12

Percent

11.90

16.67

28.57

Row Pct

41.67

58.33

 

Column Pct

83.33

19.44

 

C. jejuni-positive

Frequency

1

29

30

Percent

2.38

69.05

71.43

Row Pct

3.33

96.67

 

Column Pct

16.67

80.56

 

Column total

Frequency

6

36

42

Percent

14.29

85.71

100.00

  1. Pct Percent, p-value of McNemar’s test: 0.0703; kappa value: 0.7534.
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