Mobile Phone Survey Monitoring Round I, 2022 - Yemen, Rep.

Abstract
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The survey draws on a probability sample of 1,297 adult Yemenis (18 years of age and older) with mobile phones, targeted across 21 governorates based on the latest population projections. Interviews were conducted over the phone in August and September 2022, using a questionnaire consisting of four sections mainly focusing on labor market experiences and food insecurity. Although the survey was implemented over the phone, it is expected to have adequate coverage of the target population, as mobile phone ownership was widespread in Yemen prior to the start of the conflict. According to the Household Budget survey of 2014, 81 percent of households owned a mobile phone. While there is no recent national level data on mobile phone ownership, representative data of areas under IRG control show that mobile phone ownership increased from 84 percent in 2014 to 92 percent in 2021 (Yemen Human Development Survey 2021). Additionally, a study comparing the number of mobile phones households owned in the World Food Programme (WFP) mobile Vulnerability Analysis and Mapping (mVAM) phone survey finds a similar number to that of the last nationally representative survey, the 2014 Household Budget Survey (HBS), except for some governorates where the number of mobile phones declined due to significant population migration.

Geographic coverage
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All governorates of Yemen except for Socotra islands

Analysis unit
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Household and individual

Sampling procedure
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The survey used random digit dialing, relying on the range of valid numbers, with up to three attempts when a phone number was not reached—that is, the call unanswered, not picked up, picked up but unable to complete the interview at that time.

We used sample quotas were to obtain a diverse set of individuals across the governorates of Abyan, Aden, Al-Baida, Al-Dhale, Al-Hodeida, Al-Jawf, Al-Maharh, Al-Mahweet, Amran, Dhamar, Hadramout, Hajja, Ibb, Laheg, Mareb, Remah, Saadah, and Sanaa City.

Sampling deviation
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Some governorate quotas were not achieved due to small populations with mobile phones, lack of infrastructure for mobile phones, or blocking of international numbers for certain mobile phone service providers.

Mode of data collection
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Computer Assisted Telephone Interview [cati]

Response rate
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A total of 1,297 respondents completed the interview resulting in a response rate of around 28 percent, indicating the difficulty of completing phone interviews.

摘要
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本调查基于最新的人口预测，在也门21个省份中，针对1,297名拥有手机的成年也门人（18岁及以上）进行概率抽样。访谈于2022年8月至9月通过电话进行，问卷分为四个部分，主要关注劳动市场经验和粮食不安全。尽管调查是通过电话进行的，但由于在冲突开始之前也门手机拥有率普遍较高，因此预计能够充分覆盖目标人群。根据2014年的家庭预算调查，81%的家庭拥有手机。虽然目前没有关于手机拥有率的最新国家数据，但伊斯拉姆抵抗运动（IRG）控制地区的代表性数据显示，手机拥有率从2014年的84%增加到2021年的92%（也门人类发展调查2021）。此外，一项比较世界粮食计划署（WFP）移动脆弱性分析和制图（mVAM）电话调查中家庭拥有的手机数量与上次全国代表性调查，即2014年的家庭预算调查（HBS）中类似的研究发现，除了在一些由于人口大规模迁移而手机数量减少的省份外。
地理覆盖范围
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也门所有省份，除 Socotra 群岛外。
分析单元
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家庭和个人。
抽样程序
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调查采用随机数字拨号，依赖于有效号码的范围，在电话号码无法接通时（即电话未接听、无人接听或接听但无法完成访谈）最多尝试三次。
我们使用了样本配额，以获得阿比安、亚丁、拜达、达莱、荷台达、加夫、马哈拉、马希特、阿曼、达玛尔、哈德拉毛、哈吉、伊卜、拉赫格、马里布、雷马、萨达和萨那市等省份的多元化个体样本。
抽样偏差
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由于手机拥有人口数量少、缺乏手机基础设施或某些手机服务提供商封锁国际号码，某些省份的配额未能实现。
数据收集方式
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计算机辅助电话访谈 [cati]。
响应率
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共有1,297名受访者完成访谈，响应率约为28%，这表明完成电话访谈的难度。