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Table 2 Statistical Significance of DaliLite Z score and Ω in identifying different SCOP structural levels for the DS362 dataset

From: Exploring protein structural dissimilarity to facilitate structure classification

SCOP Level Mean Mean Norm t-test F-test Max Min
  Z Ω Z Ω p-value 95% p-value 95% Z Ω Z Ω
Class 2.68 0.91 0.07 0.55 10-16 10-1 7.50 1.60 2.00 0.44
Fold 3.72 0.77 0.17 0.46 10-16 10-8 8.50 1.22 2.00 0.27
Super-family 3.63 0.72 0.16 0.42 10-16 10-1 0.23 6.90 1.06 2.00
Family 6.28 0.39 0.43 0.20 10-7 0.31 11.90 0.95 2.00 0.08
  1. The statistical significance of difference in the mean of the normalized coefficient of dissimilarity (Ω) and DaliLite Z score in terms of Student's two-sided t-test at 95% confidence interval. The small p-values from the t-test indicate a significant difference in the mean value of the two scores for the respective shared SCOP level. The p-values for the F-test reported at 95% confidence interval indicate that the two-sided t-test is valid based on the assumption of equality of the two sample variances. Mean Norm = normalised mean.