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Table 4 Median Ct values and Ct value differences by real-time PCR

From: Comparison of rectal swabs and faeces for real-time PCR detection of enteric agents in Rwandan children with gastroenteritis

  Median Ct valuea dCtb, mean (SE) P valuec
  Rectal swab Faeces   
ETEC-eltB 32.0/37.5 28.5/37.4 2.28 (0.48) <0.0001
ETEC-estA 27.7/36.2 25.8/40.1 2.99 (0.48) <0.0001
E. coli bfpA 27.6/34.2 26.9/37.5 2.10 (0.49) <0.0001
E. coli eae 34.8/38.1 33.5/38.5 0.85 (0.47) 0.0743
Shigella ipaH 29.4/37.8 28.1/36.7 0.91 (0.58) 0.1245
Campylobacter 32.6/35.8 33.2/37.4 -0.002 (0.59) 1.00
Cryptosporidium 36.2/39.9 34.1/40.9 2.23 (0.76) 0.008
Rotavirus 22.5/41.2 20.9/36.2 2.25 (0.61) 0.0008
Norovirus GG2 30.3/38.8 29.3/33.8 1.45 (0.78) 0.08
Adenovirus 34.0/39.7 35.9/39.9 -0.48 (0.39) 0.21
  1. aConcordant/discordant, i.e. reactive in both rectal swab and faeces/reactive in either rectal swab or faeces. Negative results excluded.
  2. bdCt = Ct in rectal swab–Ct in faeces. For samples reactive in both rectal swab and faeces.
  3. cBy paired t test.
  4. ETEC, enterotoxinogenic E. coli. GG2, genogroup 2.