Vaginal Microbiota Diversity of Patients with Embryonic Miscarriage by Using 16S rDNA High-Throughput Sequencing

Table 3

Comparison of diversity of the vaginal microbiota.

	+	++
Control ()	20 (85%)	5 (15%)
Embryonic miscarriage ()	8 (32%)	17 (68%)

Bacterial density was divided into four levels according to the number of bacteria: grade 1 (+) as 1–3 kinds of bacterium; grade 2 (++) as 4–6 kinds of bacterium; grade 3 (+++) as 7–10 kinds of bacterium; and grade 4 (++++) as more than 10 kinds of bacterium. The metered data is recorded in (%), .