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Table 2 Stepwise regression analysis for the inactivation of L. monocytogenes at 28 ± 2 °C in powdered Legon-18 pepper (C. annuum)

From: The role of gamma irradiation and storage at 28 ± 2 °C on the inactivation of Listeria monocytogenes, Escherichia coli and Salmonella enterica serotype Typhimurium in sun-dried Legon-18 pepper (Capsicum annuum) powder

Step Change Step (P value) Final (P value) R2 adjusted (%)
1 Add X2 0.000* 0.000* 69.847
2 Add X1 0.000* 0.000* 85.574
3 Add X1X2 0.035* 0.033* 86.000
4 Add (X2)2 0.062** 0.062** 86.301
  1. Values marked as * are statistically significant (p < 0.05) and values marked as ** are statitically not significant (p > 0.05)