. 2017 May 31;12(5):e0177782. doi: 10.1371/journal.pone.0177782

Table 4. Mean percent offset of os from central position after manipulation with the speculum, flat tip and curved tip inserter designs under 500 cm H₂O pressure and uterine tilts (anteverted, retroverted, sideverted).

Uterine Position	Anteverted	Retroverted	Sideverted
Speculum mean offset (%)	26.6+/-8.4	15.6+/-6.2	50+/-0
Flat tip inserter mean offset (%)	41.0+/-3.6	74.7+/-4.4	48.5+/-11.0
Curved tip inserter mean offset (%)	20.0+/-6.1	33.9+/-3.0	12.5+/-0

Table 4. Mean percent offset of os from central position after manipulation with the speculum, flat tip and curved tip inserter designs under 500 cm H2O pressure and uterine tilts (anteverted, retroverted, sideverted).