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. 2017 Aug 17;12(8):e0183237. doi: 10.1371/journal.pone.0183237

Fig 2. Error, invalid, and no result rates by quarter following initial implementation October 2012 to November 2014.

Fig 2

Error rates showed increasing trend over 8 quarters, p = 0.008. Invalid rates showed decreasing trend over 8 quarters, p<0.001. No result showed increasing trend over 8 quarters, p = 0.099. Note for Fig 2. By the time of analysis all 13 sites have experienced at least four quarters. Q5 –eleven sites (ATH, WC, BOB, BK8, DRM, EXT, GAN, KAD, LMH, NRH and SDA). Q6 –ten sites (ATH, AWC, BOB, BK8, DRM, GAN, KAD, LMH, NRH and SDA). Q7. Five sites (ATH, AWC, BK8, KAD and LMH). Q8 –two sites (ATH and KAD).