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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).