一级预防措施包括禁欲、工具避孕法和避免化学刺激物,例如阴道冲洗液或杀精剂。针对沙眼衣原体所致无症状宫颈炎的筛查计划可能使盆腔炎性疾病发生率降低 50% 以上。[14]Scholes D, Stergachis A, Heidrich FE, et al. Prevention of pelvic inflammatory disease by screening for cervical chlamydial infection. N Engl J Med. 1996 May 23;334(21):1362-6.https://www.nejm.org/doi/10.1056/NEJM199605233342103?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub%3Dwww.ncbi.nlm.nih.gov&http://www.ncbi.nlm.nih.gov/pubmed/8614421?tool=bestpractice.com筛查的影响:有高质量证据表明,与选择性筛查相比,普查可使分配到常规治疗组的高风险患者的盆腔炎性疾病 (PID) 发病风险降低 50%。[14]Scholes D, Stergachis A, Heidrich FE, et al. Prevention of pelvic inflammatory disease by screening for cervical chlamydial infection. N Engl J Med. 1996 May 23;334(21):1362-6.https://www.nejm.org/doi/10.1056/NEJM199605233342103?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub%3Dwww.ncbi.nlm.nih.gov&http://www.ncbi.nlm.nih.gov/pubmed/8614421?tool=bestpractice.com系统评价或者受试者>200名的随机对照临床试验(RCT)。 如果在所有预防性保健随访时实施筛查,则筛查的影响可能更大。[15]Scholes D, Grothaus L, McClure J, et al. A randomized trial of strategies to increase Chlamydia screening in young women. Prev Med. 2006 Oct;43(4):343-50.http://www.ncbi.nlm.nih.gov/pubmed/16782182?tool=bestpractice.com筛查的影响:有中等质量证据表明,如果在初级医疗保健门诊实施筛查,则影响更大。[15]Scholes D, Grothaus L, McClure J, et al. A randomized trial of strategies to increase Chlamydia screening in young women. Prev Med. 2006 Oct;43(4):343-50.http://www.ncbi.nlm.nih.gov/pubmed/16782182?tool=bestpractice.com受试者<200名的随机对照临床试验(RCT)、受试者>200名且方法学存在缺陷的随机对照临床试验(RCT)、方法学存在缺陷的系统评价或者高质量的观察性(队列)研究。