Methods The first labor phase and latent phase of 205 cases of primipara,including 105 cases of primipara(G_1Po)and 100 cased of primipara(G_(n+1) Po),were observed and analyzed.

• 方法观察、统计和分析205例初产妇第一产程和潜伏期的时间,其中初孕次初产妇105例,多孕次初产妇100例。