Table 4 Correlation between coliforms and season, meat type, and product form

Sample Coliforms χ2/ p-valuea
Presence Absence
Season Spring 4 (14.3) 34 (22.7) 19.062/<0.001
Summer 16 (57.1) 42 (28.0)
Autumn 8 (28.6) 38 (25.3)
Winter 0 (0.0) 36 (24.0)
Meat type Beef 10 (35.7) 66 (44.0) 0.993/0.609
Pork 15 (53.6) 74 (49.3)
Chicken 3 (10.7) 10 (6.7)
Product form Raw material 2 (7.1) 36 (24.0) 3.993/0.046
Finished products 26 (92.9) 114 (76.0)
p-values were calculated by Chi-square test.
a Indicates that p-value for trend <0.05.