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Table 8 Numbers of species cultured per patient and species diversity indices

From: Comparison between Gram stain and culture for the characterization of vaginal microflora: Definition of a distinct grade that resembles grade I microflora and revised categorization of grade I microflora

Grade Number of species cultured Diversity
  Average Range Number of Species/Number of Samples (Index) Simpson's Diversity Index
Ia 1.5 1–6 27/162 (0.17) 0.6
Ib 1.7 1–7 38/181 (0.21) 0.9
Iab 2.0 1–7 18/60 (0.30) 0.8
I-like 2.3 1–8 30/36 (0.83) 0.9
II 2.7 1–6 35/46 (0.76) 0.9
III 3.6 2–8 33/22 (1.50) 0.9
IV 2.0 1–3 5/8 (0.63) 0.8