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Table 3 Variance components show relative importance of factors for repeated measurements by qPCR

From: Sources of variability in the measurement of Ascaris lumbricoides infection intensity by Kato-Katz and qPCR

  % variance explained AIC when item excluded, relative to 13,947 for full model Chi-square value (1 degree of freedom) and P-value for comparison with full model
Stool donor 92.4 15,322 χ 2 = 1376, P < 0.0001****
Extraction 1.7 14,037 χ 2 = 92, P < 0.0001****
Plate 0.2 13,955 χ 2 = 10, P = 0.001***
Well 0.0 13,945 χ 2 = 0, P = 1
IAC level 0.7 13,949 χ 2 = 4, P = 0.04 *
Residual 5.0   
  1. Abbreviation: AIC Akaike information criterion
  2. *P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001; ****P ≤ 0.0001