Comparability of modern contraceptive use estimates between a face-to-face survey and a cellphone survey among women in Burkina Faso
Comparability of modern contraceptive use estimates between a face-to-face survey and a cellphone survey among women in Burkina Faso
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DOI：
10.1371/journal.pone.0231819
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发表时间：
2020-05-13
期刊：
影响因子：
3.7
通讯作者：
Moreau, Caroline
中科院分区：
文献类型：
--
作者：
Greenleaf, Abigail R.;Gadiaga, Aliou;Moreau, Caroline
撒哈拉以南非洲(SSA)手机拥有量的激增为以比面对面(FTF)调查更低的成本收集公共卫生指标提供了机会。这项分析评估了布基纳法索具有全国代表性的FTF调查和使用随机数字拨号(RDD)在布基纳法索育龄妇女中进行的手机调查的现代避孕普及率估计的等价性。方法我们分析了2017年12月至2018年5月在布基纳法索进行的两项调查的数据。由绩效监测和问责(PMA2020)进行的FTF调查包括具有全国代表性的3556名育龄妇女(15-49岁)的样本。RDD调查是使用计算机辅助电话采访进行的，包括2379名育龄女性。结果与FTF受访者相比，RDD样本中的女性更年轻，更有可能拥有二级学位，并且会说法语。与FTF受访者(26%)相比，RDD受访者更有可能报告使用现代避孕措施(40%)，在对RDD样本(39%)应用分层后权重后，差异保持不变。这一差额超过了4%的等值利润率。RDD样本也比FTF样本中拥有手机的女性的子样本(32%)对避孕用具的估计更高。在调整了女性的社会人口学因素后，与FTF调查相比，RDD调查中使用避孕药的几率高出1.9倍(95%CI：1.6-2.2)，与FTF手机用户相比，使用避孕药的几率高出1.6倍(95%CI：1.3-1.8)。结论布基纳法索使用手机RDD调查的现代避孕普及率被高估了，即使在调整了一些社会人口学因素后也是如此。进一步的研究应该探索通过调查模式对现代避孕用具使用情况进行不同估计的原因。
IntroductionThe proliferation of cell phone ownership in Sub-Saharan Africa (SSA) presents the opportunity to collect public health indicators at a lower cost compared to face-to-face (FTF) surveys. This analysis assesses the equivalence of modern contraceptive prevalence estimates between a nationally representative FTF survey and a cell phone survey using random digit dialing (RDD) among women of reproductive age in Burkina Faso.MethodsWe analyzed data from two surveys conducted in Burkina Faso between December 2017 and May 2018. The FTF survey conducted by Performance Monitoring and Accountability (PMA2020) comprised a nationally representative sample of 3,556 women of reproductive age (15-49 years). The RDD survey was conducted using computer-assisted telephone interviewing and included 2,379 women of reproductive age.ResultsCompared to FTF respondents, women in the RDD sample were younger, were more likely to have a secondary degree and to speak French. RDD respondents were more likely to report using modern contraceptive use (40%) compared to FTF respondents (26%) and the difference remained unchanged after applying post-stratification weights to the RDD sample (39%). This difference surpassed the equivalence margin of 4%. The RDD sample also produced higher estimates of contraceptive use than the subsample of women who owned a phone in the FTF sample (32%). After adjusting for women's sociodemographic factors, the odds of contraceptive use were 1.9 times higher (95% CI: 1.6-2.2) in the RDD survey compared to the FTF survey and 1.6 times higher (95% CI: 1.3-1.8) compared to FTF phone owners.ConclusionsModern contraceptive prevalence in Burkina Faso is over-estimated when using a cell phone RDD survey, even after adjusting for a number of sociodemographic factors. Further research should explore causes of differential estimates of modern contraceptive use by survey modes.