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Table 1 Trichotomous coding scheme for the four tests

From: Visual inspection with acetic acid as a cervical cancer test: accuracy validated using latent class analysis

Test Low Medium High
VIA Normal Atypical Abnormal, Cancer
Pap Normal, Inflammation, Ascus, Agus LGSIL HGSIL, Cancer
HPV < 1.0 RLU compared to control >= 1.0 RLU and < 20.0 RLU compared to control >= 20.0 RLU compared to control
Colposcopy/Biopsy* Normal, Inflammation, Pure HPV LGSIL HGSIL, Cancer
  1. * For subjects with both biopsy and colposcopy results, biopsy result was used.