Table 2 Summary of the permutation tests comparing the two draw days, the five draws across the day, or individuals to determine significant sources of variation.

From: Diurnal stability of cell-free DNA and cell-free RNA in human plasma samples

Analyte

Analysis method

Daya

Draw numberb

Individualb

cfDNA

Qubit

0.30 (ns)

0.38 (ns)

0.013 (*)

TERT

0.61 (ns)

0.38 (ns)

0.021 (*)

NAGK

0.35 (ns)

0.38 (ns)

0.020 (*)

cfRNA

Bioanalyzer

0.75 (ns)

0.64 (ns)

0.82 (ns)

ACTB ddPCR

0.96 (ns)

0.80 (ns)

0.20 (ns)

GAPDH ddPCR

0.29 (ns)

0.53 (ns)

0.016 (*)

  1. aPermutation test of symmetry. P values are followed by P value summaries in parenthesis. Ns not significant.
  2. bOne-way permutation test of independence. P values are followed by P value summaries in parenthesis. *P < 0.05; **P < 0.01; ****P < 0.0001; ns not significant.
Back to article page