div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: PatientPop · 2014 159 115 275 682 957 Discussion Percent 2013 162 117 279 683 962 : Transvaginal measurement of cervical length Results We used a Z test for two population src=https:reader034fdocumentsnetreader034viewer20220519176008f7c46342d553a45420d0html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv