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Timing of Colposcopy and Risk of Cervical Cancer

阴道镜检查 医学 宫颈癌 产科 危险系数 比例危险模型 宫颈上皮内瘤变 癌症 妇科 外科 内科学 置信区间
作者
Stephanie Alimena,Jacquelyn M. Lykken,Jasmin A. Tiro,Jessica Chubak,Aruna Kamineni,Jennifer S. Haas,Cláudia Werner,Sarah C. Kobrin,Sarah Feldman
出处
期刊:Obstetrics & Gynecology [Lippincott Williams & Wilkins]
卷期号:142 (5): 1125-1134
标识
DOI:10.1097/aog.0000000000005313
摘要

To quantify the association between time to colposcopy and risk of subsequent cervical cancer.A longitudinal analysis of patients aged 21-79 years with an abnormal cervical cancer test result from health care systems in Texas, Massachusetts, and Washington was performed. The outcome was a cervical cancer diagnosis 12 months or more after the abnormal result. The primary analysis compared receipt of colposcopy within 3 months (91 days or less) with receipt of colposcopy at 3-12 months (92-365 days) and no colposcopy within 12 months of the abnormal test result; post hoc analyses compared colposcopy within 12 months (365 days or less) with no colposcopy within 12 months. Associations were assessed with multivariable Cox proportional hazards regression controlling for age, risk status, result severity, and health care system.Of 17,541 patients, 53.3% of patients received colposcopy within 3 months, 22.2% received colposcopy in 3-12 months, and 24.6% had no colposcopy within 12 months. One hundred forty-seven patients were diagnosed with cervical cancer within 12 months and removed from subsequent analyses. Sixty-five patients (0.4%) were diagnosed with cervical cancer more than 1 year (366 days or more) after the abnormal Pap or human papillomavirus test result. The risk of cervical cancer detection more than 1 year after the abnormal test result was not different in patients who received colposcopy within 3-12 months (hazard ratio [HR] 1.07, 95% CI 0.54-2.12) and higher among patients with no colposcopy within 12 months (HR 2.34, 95% CI 1.33-4.14) compared with patients who had colposcopy within 3 months. Post hoc analyses showed that the risk of cervical cancer diagnosis was 2.29-fold higher among those without colposcopy within 12 months compared with those who received colposcopy within 12 months (95% CI 1.37-3.83); among patients with high-grade cytology results, the risk of cervical cancer detection among those without colposcopy within 12 months was 3.12-fold higher compared with those who received colposcopy within 12 months (95% CI 1.47-6.70).There was no difference in cervical cancer risk at more than 1 year between patients who received colposcopy within 3 months compared with those who received colposcopy within 3-12 months of an abnormal result. Patients who did not receive colposcopy within 12 months of an abnormal result had a higher risk of subsequent cervical cancer compared with those who received a colposcopy within 12 months.
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