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Table 3 DNA quality obtained with the Oragene™ DNA Self-Collection Kit in a cohort of subjects born in 1993, city of Pelotas, southern Brazil (N = 822)

From: Quality of DNA extracted from saliva samples collected with the Oragene™ DNA self-collection kit

RATa
  Mean ± SD Median Range p-value b CV (%) Spearman correlation (r)
First extraction 1.78 ± 0.12 1.79 0.84–2.64 1 6.5 0.67
Second extraction 1.84 ± 0.09 1.85 1.44–3.00   4.8  
  1. a RAT (Ratio of OD differences) = [(A260 – A320)/(A280 – A320)].
  2. b one-tailed p-value of difference (paired t-test 1st >2nd evaluation).