Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, New York 10032, USA.
Obstet Gynecol. 2012 Jan;119(1):14-20. doi: 10.1097/AOG.0b013e31823d4167.
To estimate whether daily educational text messages affect oral contraceptive pill (OCP) continuation at 6 months.
We randomized young women electing OCPs at an urban family planning health center to either routine care or routine care plus 180 days of daily educational text messages. Investigators masked to treatment allocation randomized participants who were not masked to treatment. The primary outcome measure was self-reported OCP continuation through a telephone call at 6 months (contacts between 5 and 8 months).
We enrolled 962 participants (480 intervention and 482 routine care) and obtained continuation data on 683 (346 and 337, respectively). At the follow-up, 64% of participants randomized to the intervention were still OCP users compared with 54% of the routine care group (P=.005). Continuation was highest in the intervention group if the interview took place while the intervention was ongoing (75% compared with 54%, P=.003); the effect of the intervention on continuation was less after the intervention ended (60% compared with 54%, P=.16). Participants receiving the intervention were more likely to continue oral contraception than control participants at 6 months (odds ratio 1.44, 95% confidence interval 1.03-2.00) in analyses adjusted for age, race or ethnicity, age at coitarche, pregnancy history, and OCP experience.
The use of daily educational text messages improves OCP continuation at 6 months over routine care alone. Ten women would need to receive this simple intervention to improve continuation in one. This effect is strongest in the women whose follow-up took place while the text intervention was ongoing.
ClinicalTrials.gov, www.ClinicalTrials.gov, NCT00677703.
评估每日教育文本信息是否会影响口服避孕药（OCP）在 6 个月时的续用率。
我们将在城市计划生育健康中心选择 OCP 的年轻女性随机分为常规护理组或常规护理加 180 天每日教育文本信息组。研究者对治疗分配进行了设盲，而参与者对治疗不知情。主要结局指标是通过 6 个月时的电话随访（5 至 8 个月之间的联系）报告的 OCP 续用情况。
我们共纳入 962 名参与者（480 名干预组和 482 名常规护理组），并获得了 683 名（分别为 346 名和 337 名）参与者的续用数据。在随访时，随机分配到干预组的参与者中有 64%仍在使用 OCP，而常规护理组为 54%（P=.005）。如果在干预进行期间进行访谈，干预组的续用率最高（75%比 54%，P=.003）；干预结束后，干预对续用的影响较小（60%比 54%，P=.16）。在调整年龄、种族或民族、初潮年龄、妊娠史和 OCP 使用经验后，接受干预的参与者在 6 个月时继续使用口服避孕药的可能性高于对照组参与者（比值比 1.44，95%置信区间 1.03-2.00）。
与单独常规护理相比，每日教育文本信息的使用可在 6 个月时提高 OCP 的续用率。每 10 名女性需要接受这种简单的干预，才能提高其中 1 名女性的续用率。这种效果在文本干预进行期间进行随访的女性中最强。
ClinicalTrials.gov，www.ClinicalTrials.gov，NCT00677703。
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